powerpc: T104xRDB: Remove macro CONFIG_T104xRDB and T104xD4RDB

CONFIG_T104xRDB is defined in T104xRDB.h, so it is always enabled for
all T1040RDB, T1040D4RDB, T1042RDB, T1042D4RDB, T1042RDB_PI.
CONFIG_T104XD4RDB is defined for all T1040D4RDB, T1042D4RDB.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/t104xrdb/cpld.h b/board/freescale/t104xrdb/cpld.h
index 86de26c..7adf5e4 100644
--- a/board/freescale/t104xrdb/cpld.h
+++ b/board/freescale/t104xrdb/cpld.h
@@ -21,7 +21,7 @@
 	u8 int_status;		/* 0x12 - Interrupt status Register */
 	u8 flash_ctl_status;	/* 0x13 - Flash control and status register */
 	u8 fan_ctl_status;	/* 0x14 - Fan control and status register  */
-#if defined(CONFIG_T104XD4RDB)
+#if defined(CONFIG_TARGET_T1040D4RDB) || defined(CONFIG_TARGET_T1042D4RDB)
 	u8 int_mask;		/* 0x15 - Interrupt mask Register */
 #else
 	u8 led_ctl_status;	/* 0x15 - LED control and status register */