ARM: tegra: split p2771-0000 build

There are multiple versions of p2771-0000 board. There are SW visible
incompatible differences between the versions, and they are relevant to
U-Boot. Create separate "A02" and "B00" defconfigs (named after the first
and/or only board rev the defconfig supports) so that users can select
which build they want.

With the minimal set of HW currently enabled in U-Boot, the differences
are irrelevant, hence the DT files aren't different. However, that will
change in a future patch.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/configs/p2771-0000_defconfig b/configs/p2771-0000-a02_defconfig
similarity index 85%
copy from configs/p2771-0000_defconfig
copy to configs/p2771-0000-a02_defconfig
index 9f2c418..1fe25f5 100644
--- a/configs/p2771-0000_defconfig
+++ b/configs/p2771-0000-a02_defconfig
@@ -2,10 +2,10 @@
 CONFIG_TEGRA=y
 CONFIG_TEGRA186=y
 CONFIG_TARGET_P2771_0000=y
-CONFIG_DEFAULT_DEVICE_TREE="tegra186-p2771-0000"
+CONFIG_DEFAULT_DEVICE_TREE="tegra186-p2771-0000-a02"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_HUSH_PARSER=y
-CONFIG_SYS_PROMPT="Tegra186 (P2771-0000) # "
+CONFIG_SYS_PROMPT="Tegra186 (P2771-0000 A02) # "
 # CONFIG_CMD_IMI is not set
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
diff --git a/configs/p2771-0000_defconfig b/configs/p2771-0000-b00_defconfig
similarity index 85%
rename from configs/p2771-0000_defconfig
rename to configs/p2771-0000-b00_defconfig
index 9f2c418..552fb6c 100644
--- a/configs/p2771-0000_defconfig
+++ b/configs/p2771-0000-b00_defconfig
@@ -2,10 +2,10 @@
 CONFIG_TEGRA=y
 CONFIG_TEGRA186=y
 CONFIG_TARGET_P2771_0000=y
-CONFIG_DEFAULT_DEVICE_TREE="tegra186-p2771-0000"
+CONFIG_DEFAULT_DEVICE_TREE="tegra186-p2771-0000-b00"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_HUSH_PARSER=y
-CONFIG_SYS_PROMPT="Tegra186 (P2771-0000) # "
+CONFIG_SYS_PROMPT="Tegra186 (P2771-0000 B00) # "
 # CONFIG_CMD_IMI is not set
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set