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>

arch/arm/dts/Makefile

@@ -53,7 +53,8 @@ dtb-$(CONFIG_TEGRA) += tegra20-harmony.dtb \
 	tegra124-jetson-tk1.dtb \
 	tegra124-nyan-big.dtb \
 	tegra124-venice2.dtb \
-	tegra186-p2771-0000.dtb \
+	tegra186-p2771-0000-a02.dtb \
+	tegra186-p2771-0000-b00.dtb \
 	tegra210-e2220-1170.dtb \
 	tegra210-p2371-0000.dtb \
 	tegra210-p2371-2180.dtb \

arch/arm/dts/tegra186-p2771-0000-a02.dts

+/dts-v1/;
+
+#include "tegra186-p2771-0000.dtsi"
+
+/ {
+	model = "NVIDIA P2771-0000 A02";
+	compatible = "nvidia,p2771-0000-a02", "nvidia,p2771-0000", "nvidia,tegra186";
+};

arch/arm/dts/tegra186-p2771-0000-b00.dts

+/dts-v1/;
+
+#include "tegra186-p2771-0000.dtsi"
+
+/ {
+	model = "NVIDIA P2771-0000 B00";
+	compatible = "nvidia,p2771-0000-b00", "nvidia,p2771-0000", "nvidia,tegra186";
+};

arch/arm/dts/tegra186-p2771-0000.dts → arch/arm/dts/tegra186-p2771-0000.dtsi

-/dts-v1/;
-
 #include "tegra186.dtsi"
 
 / {

configs/p2771-0000_defconfig → configs/p2771-0000-a02_defconfig

@@ -2,10 +2,10 @@ CONFIG_ARM=y
 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

configs/p2771-0000-b00_defconfig

+CONFIG_ARM=y
+CONFIG_TEGRA=y
+CONFIG_TEGRA186=y
+CONFIG_TARGET_P2771_0000=y
+CONFIG_DEFAULT_DEVICE_TREE="tegra186-p2771-0000-b00"
+CONFIG_OF_SYSTEM_SETUP=y
+CONFIG_HUSH_PARSER=y
+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
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_FPGA is not set
+CONFIG_CMD_GPIO=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
+# CONFIG_CMD_NFS is not set
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_SYS_NS16550=y
+CONFIG_USB=y
+CONFIG_DM_USB=y