ARM: dts: renesas: Switch to using upstream DT

Enable OF_UPSTREAM to use upstream DT and add renesas/ prefix to the
DEFAULT_DEVICE_TREE and OF_LIST. And thereby directly build DTB from
dts/upstream/src/ including *-u-boot.dtsi files from arch/$(ARCH)/dts/
directory.

The configuration update has been done using the following script:
```
sed -i '/^CONFIG_DEFAULT_DEVICE_TREE/ s@="@&renesas/@' `git grep -li renesas configs`
sed -i '/^CONFIG_OF_LIST/ s@r8a@renesas/&@g' `git grep -li renesas configs`
```

The RZN1 Snarc board does not seem to have a matching Linux kernel
DT counterpart, this is currently not switched to OF upstream.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 23ee252..be8ab0f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1068,6 +1068,7 @@
 	imply BOARD_EARLY_INIT_F
 	imply CMD_DM
 	imply FAT_WRITE
+	imply OF_UPSTREAM
 	imply SYS_THUMB_BUILD
 	imply ARCH_MISC_INIT if DISPLAY_CPUINFO
 
diff --git a/configs/alt_defconfig b/configs/alt_defconfig
index 06e9e11..c9ca22c 100644
--- a/configs/alt_defconfig
+++ b/configs/alt_defconfig
@@ -16,7 +16,7 @@
 CONFIG_ENV_OFFSET=0xC0000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7794-alt"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7794-alt"
 CONFIG_SPL_TEXT_BASE=0xe6300000
 CONFIG_ARCH_RENESAS_BOARD_STRING="Alt"
 CONFIG_R8A7794=y
diff --git a/configs/blanche_defconfig b/configs/blanche_defconfig
index c392055..a2823a6 100644
--- a/configs/blanche_defconfig
+++ b/configs/blanche_defconfig
@@ -12,7 +12,7 @@
 CONFIG_ENV_OFFSET=0x40000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7792-blanche"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7792-blanche"
 CONFIG_ARCH_RENESAS_BOARD_STRING="Blanche"
 CONFIG_R8A7792=y
 CONFIG_TARGET_BLANCHE=y
diff --git a/configs/gose_defconfig b/configs/gose_defconfig
index 35edc67..0f76ae1 100644
--- a/configs/gose_defconfig
+++ b/configs/gose_defconfig
@@ -16,7 +16,7 @@
 CONFIG_ENV_OFFSET=0xC0000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7793-gose"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7793-gose"
 CONFIG_SPL_TEXT_BASE=0xe6300000
 CONFIG_ARCH_RENESAS_BOARD_STRING="Gose"
 CONFIG_R8A7793=y
diff --git a/configs/grpeach_defconfig b/configs/grpeach_defconfig
index 0c581b6..70a8008 100644
--- a/configs/grpeach_defconfig
+++ b/configs/grpeach_defconfig
@@ -11,7 +11,7 @@
 CONFIG_ENV_OFFSET=0x80000
 CONFIG_ENV_SECT_SIZE=0x10000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r7s72100-gr-peach"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r7s72100-gr-peach"
 CONFIG_RZA1=y
 CONFIG_OF_LIBFDT_OVERLAY=y
 CONFIG_SYS_MONITOR_LEN=524288
diff --git a/configs/koelsch_defconfig b/configs/koelsch_defconfig
index ad411b4..a912e58 100644
--- a/configs/koelsch_defconfig
+++ b/configs/koelsch_defconfig
@@ -16,7 +16,7 @@
 CONFIG_ENV_OFFSET=0xC0000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7791-koelsch"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7791-koelsch"
 CONFIG_SPL_TEXT_BASE=0xe6300000
 CONFIG_ARCH_RENESAS_BOARD_STRING="Koelsch"
 CONFIG_R8A7791=y
diff --git a/configs/lager_defconfig b/configs/lager_defconfig
index f60d4db..03f29b8 100644
--- a/configs/lager_defconfig
+++ b/configs/lager_defconfig
@@ -16,7 +16,7 @@
 CONFIG_ENV_OFFSET=0xC0000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7790-lager"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7790-lager"
 CONFIG_SPL_TEXT_BASE=0xe6300000
 CONFIG_ARCH_RENESAS_BOARD_STRING="Lager"
 CONFIG_R8A7790=y
diff --git a/configs/porter_defconfig b/configs/porter_defconfig
index f05a0ba..170ca3a 100644
--- a/configs/porter_defconfig
+++ b/configs/porter_defconfig
@@ -16,7 +16,7 @@
 CONFIG_ENV_OFFSET=0xC0000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7791-porter"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7791-porter"
 CONFIG_SPL_TEXT_BASE=0xe6300000
 CONFIG_ARCH_RENESAS_BOARD_STRING="Porter"
 CONFIG_R8A7791=y
diff --git a/configs/rzn1_snarc_defconfig b/configs/rzn1_snarc_defconfig
index 29a96d1..1c313d2 100644
--- a/configs/rzn1_snarc_defconfig
+++ b/configs/rzn1_snarc_defconfig
@@ -21,3 +21,4 @@
 CONFIG_SYS_NS16550=y
 CONFIG_SYS_NS16550_MEM32=y
 # CONFIG_EFI_LOADER is not set
+# CONFIG_OF_UPSTREAM is not set
diff --git a/configs/silk_defconfig b/configs/silk_defconfig
index 40ac875..2e4fab8 100644
--- a/configs/silk_defconfig
+++ b/configs/silk_defconfig
@@ -16,7 +16,7 @@
 CONFIG_ENV_OFFSET=0xC0000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7794-silk"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7794-silk"
 CONFIG_SPL_TEXT_BASE=0xe6300000
 CONFIG_ARCH_RENESAS_BOARD_STRING="Silk"
 CONFIG_R8A7794=y
diff --git a/configs/stout_defconfig b/configs/stout_defconfig
index 428a024..ee87ea5 100644
--- a/configs/stout_defconfig
+++ b/configs/stout_defconfig
@@ -16,7 +16,7 @@
 CONFIG_ENV_OFFSET=0xC0000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="r8a7790-stout"
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a7790-stout"
 CONFIG_SPL_TEXT_BASE=0xe6300000
 CONFIG_ARCH_RENESAS_BOARD_STRING="Stout"
 CONFIG_R8A7790=y