arc: Rename ARCangel4 board to nSIM

ARCangel was one of the main development boards back in the day but
now it's gone and replaced by other boards like ARC SDP.

But we also used to have simulation platform very similar to ARCangel4
in terms of CPU settings as well as basic IO like UART. Even though
ARCangel4 is long gone now we have a replacement for simulation which is
a plain or stand-alone nSIM and Free nSIM.

Note Free nSIM is available for download here:
https://www.synopsys.com/cgi-bin/dwarcnsim/req1.cgi

And while at it:
 * Finally switch hex numerical values in nsim.h to defines from
   include/linux/sizes.h
 * Add defconfigs with ARC HS38 cores
 * Recreated all defconfigs with savedefconfig

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/configs/arcangel4-be_defconfig b/configs/nsim_700_defconfig
similarity index 75%
copy from configs/arcangel4-be_defconfig
copy to configs/nsim_700_defconfig
index c0c2e4b..202f77c 100644
--- a/configs/arcangel4-be_defconfig
+++ b/configs/nsim_700_defconfig
@@ -1,11 +1,11 @@
 CONFIG_ARC=y
-CONFIG_CPU_BIG_ENDIAN=y
-CONFIG_TARGET_ARCANGEL4=y
-CONFIG_DM_SERIAL=y
+CONFIG_TARGET_NSIM=y
 CONFIG_SYS_CLK_FREQ=70000000
+CONFIG_DM_SERIAL=y
 CONFIG_SYS_TEXT_BASE=0x81000000
-CONFIG_DEFAULT_DEVICE_TREE="arcangel4"
+CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_BOOTDELAY=3
+CONFIG_SYS_PROMPT="nsim# "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set
diff --git a/configs/arcangel4-be_defconfig b/configs/nsim_700be_defconfig
similarity index 78%
rename from configs/arcangel4-be_defconfig
rename to configs/nsim_700be_defconfig
index c0c2e4b..b7f7924 100644
--- a/configs/arcangel4-be_defconfig
+++ b/configs/nsim_700be_defconfig
@@ -1,11 +1,12 @@
 CONFIG_ARC=y
 CONFIG_CPU_BIG_ENDIAN=y
-CONFIG_TARGET_ARCANGEL4=y
-CONFIG_DM_SERIAL=y
+CONFIG_TARGET_NSIM=y
 CONFIG_SYS_CLK_FREQ=70000000
+CONFIG_DM_SERIAL=y
 CONFIG_SYS_TEXT_BASE=0x81000000
-CONFIG_DEFAULT_DEVICE_TREE="arcangel4"
+CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_BOOTDELAY=3
+CONFIG_SYS_PROMPT="nsim# "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set
diff --git a/configs/arcangel4_defconfig b/configs/nsim_hs38_defconfig
similarity index 73%
rename from configs/arcangel4_defconfig
rename to configs/nsim_hs38_defconfig
index efa55d0..6b448ef 100644
--- a/configs/arcangel4_defconfig
+++ b/configs/nsim_hs38_defconfig
@@ -1,11 +1,12 @@
 CONFIG_ARC=y
-CONFIG_TARGET_ARCANGEL4=y
-CONFIG_DM_SERIAL=y
+CONFIG_ISA_ARCV2=y
+CONFIG_TARGET_NSIM=y
 CONFIG_SYS_CLK_FREQ=70000000
+CONFIG_DM_SERIAL=y
 CONFIG_SYS_TEXT_BASE=0x81000000
-CONFIG_DEFAULT_DEVICE_TREE="arcangel4"
+CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_BOOTDELAY=3
-CONFIG_SYS_PROMPT="arcangel4# "
+CONFIG_SYS_PROMPT="nsim# "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set
diff --git a/configs/arcangel4-be_defconfig b/configs/nsim_hs38be_defconfig
similarity index 75%
copy from configs/arcangel4-be_defconfig
copy to configs/nsim_hs38be_defconfig
index c0c2e4b..3e1c599 100644
--- a/configs/arcangel4-be_defconfig
+++ b/configs/nsim_hs38be_defconfig
@@ -1,11 +1,13 @@
 CONFIG_ARC=y
+CONFIG_ISA_ARCV2=y
 CONFIG_CPU_BIG_ENDIAN=y
-CONFIG_TARGET_ARCANGEL4=y
-CONFIG_DM_SERIAL=y
+CONFIG_TARGET_NSIM=y
 CONFIG_SYS_CLK_FREQ=70000000
+CONFIG_DM_SERIAL=y
 CONFIG_SYS_TEXT_BASE=0x81000000
-CONFIG_DEFAULT_DEVICE_TREE="arcangel4"
+CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_BOOTDELAY=3
+CONFIG_SYS_PROMPT="nsim# "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set