powerpc: T4240RDB: Remove macro CONFIG_T4240RDB

Use CONFIG_TARGET_T4240RDB instead.

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

board/freescale/t4rdb/Makefile

@@ -8,7 +8,7 @@ ifdef CONFIG_SPL_BUILD
 obj-y	+= spl.o
 else
 obj-$(CONFIG_TARGET_T4160RDB)	+= t4240rdb.o
-obj-$(CONFIG_T4240RDB)	+= t4240rdb.o
+obj-$(CONFIG_TARGET_T4240RDB)	+= t4240rdb.o
 obj-y			+= cpld.o
 obj-y			+= eth.o
 obj-$(CONFIG_PCI)	+= pci.o

include/configs/T4240RDB.h

@@ -10,8 +10,6 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-#define CONFIG_T4240RDB
-
 #define CONFIG_FSL_SATA_V2
 #define CONFIG_PCIE4
 

scripts/config_whitelist.txt

@@ -7828,7 +7828,6 @@ CONFIG_T1040QDS
 CONFIG_T2080QDS
 CONFIG_T2080RDB
 CONFIG_T2081QDS
-CONFIG_T4240RDB
 CONFIG_TAM3517_SETTINGS
 CONFIG_TAM3517_SW3_SETTINGS
 CONFIG_TCA642X