powerpc: T4160RDB: Separate from T4240RDB in Kconfig

Use TARGET_T4160RDB to simplify Kconfig options.

Signed-off-by: York Sun <york.sun@nxp.com>

arch/powerpc/cpu/mpc85xx/Kconfig

@@ -265,6 +265,11 @@ config TARGET_T4160QDS
 	select SUPPORT_SPL
 	select PHYS_64BIT
 
+config TARGET_T4160RDB
+	bool "Support T4160RDB"
+	select SUPPORT_SPL
+	select PHYS_64BIT
+
 config TARGET_T4240QDS
 	bool "Support T4240QDS"
 	select SUPPORT_SPL

board/freescale/t4rdb/Kconfig

-if TARGET_T4240RDB
+if TARGET_T4160RDB || TARGET_T4240RDB
 
 config SYS_BOARD
 	default "t4rdb"

board/freescale/t4rdb/Makefile

@@ -7,6 +7,7 @@
 ifdef CONFIG_SPL_BUILD
 obj-y	+= spl.o
 else
+obj-$(CONFIG_TARGET_T4160RDB)	+= t4240rdb.o
 obj-$(CONFIG_T4240RDB)	+= t4240rdb.o
 obj-y			+= cpld.o
 obj-y			+= eth.o

configs/T4160RDB_defconfig

 CONFIG_PPC=y
 CONFIG_MPC85xx=y
-CONFIG_TARGET_T4240RDB=y
+CONFIG_TARGET_T4160RDB=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y