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/T208xRDB.h b/include/configs/T208xRDB.h
index cae6a3d..a35a6f5 100644
--- a/include/configs/T208xRDB.h
+++ b/include/configs/T208xRDB.h
@@ -39,7 +39,6 @@
 
 #ifdef CONFIG_RAMBOOT_PBL
 #define CONFIG_SYS_FSL_PBL_PBI board/freescale/t208xrdb/t2080_pbi.cfg
-#define CONFIG_SYS_FSL_PBL_RCW board/freescale/t208xrdb/t2080_rcw.cfg
 
 #define CONFIG_SPL_FLUSH_IMAGE
 #define CONFIG_SPL_TARGET		"u-boot-with-spl.bin"
@@ -63,6 +62,7 @@
 #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/t208xrdb/t2080_nand_rcw.cfg
 #define CONFIG_SPL_NAND_BOOT
 #endif
 
@@ -77,6 +77,7 @@
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_SYS_MPC85XX_NO_RESETVEC
 #endif
+#define CONFIG_SYS_FSL_PBL_RCW board/freescale/t208xrdb/t2080_spi_rcw.cfg
 #define CONFIG_SPL_SPI_BOOT
 #endif
 
@@ -91,6 +92,7 @@
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_SYS_MPC85XX_NO_RESETVEC
 #endif
+#define CONFIG_SYS_FSL_PBL_RCW board/freescale/t208xrdb/t2080_sd_rcw.cfg
 #define CONFIG_SPL_MMC_BOOT
 #endif