Txxx/RCW: Split unified RCW to RCWs for sd, spi and nand.

T series boards use unified RCW for sd, spi and nand boot.
Now split txxx_rcw.cfg to txxx_sd_rcw.cfg, txxx_spi_rcw.cfg
and txxx_nand_rcw.cfg for SPI/NAND/SD boot.
And modify RCW[PBI_SRC] for them:
	PBI_SRC=5            for SPI 24-bit addressing
	PBI_SRC=6            for SD boot
	PBI_SRC=14           for IFC NAND boot

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/include/configs/T4240QDS.h b/include/configs/T4240QDS.h
index aac2e10..6ba2a03 100644
--- a/include/configs/T4240QDS.h
+++ b/include/configs/T4240QDS.h
@@ -20,7 +20,6 @@
 
 #ifdef CONFIG_RAMBOOT_PBL
 #define CONFIG_SYS_FSL_PBL_PBI board/freescale/t4qds/t4_pbi.cfg
-#define CONFIG_SYS_FSL_PBL_RCW board/freescale/t4qds/t4_rcw.cfg
 #if !defined(CONFIG_NAND) && !defined(CONFIG_SDCARD)
 #define CONFIG_RAMBOOT_TEXT_BASE        CONFIG_SYS_TEXT_BASE
 #define CONFIG_RESET_VECTOR_ADDRESS     0xfffffffc
@@ -41,6 +40,7 @@
 #define CONFIG_SYS_NAND_U_BOOT_START	0x00200000
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	(256 << 10)
 #define CONFIG_SYS_LDSCRIPT	"arch/powerpc/cpu/mpc85xx/u-boot-nand.lds"
+#define CONFIG_SYS_FSL_PBL_RCW board/freescale/t4qds/t4_nand_rcw.cfg
 #define CONFIG_SPL_NAND_BOOT
 #endif
 
@@ -55,6 +55,7 @@
 #define	CONFIG_SYS_MPC85XX_NO_RESETVEC
 #endif
 #define CONFIG_SYS_LDSCRIPT	"arch/powerpc/cpu/mpc85xx/u-boot.lds"
+#define CONFIG_SYS_FSL_PBL_RCW board/freescale/t4qds/t4_sd_rcw.cfg
 #define CONFIG_SPL_MMC_BOOT
 #endif