powerpc/t104xrdb: Add Support of rcw for T1042RDB in u-boot

This patch adds support of rcw for T1042RDB, it makes following changes :
- Adds t1042_rcw.cfg file for serdes protocol 0x86 for T1042RDB
- Renames t1042_pi_rcw.cfg file from t1042_rcw.cfg and also updates
  comments for valid serdes protocol which is 0x06
- Also updates CONFIG_SYS_FSL_PBL_RCW for T1042RDB

Signed-off-by: Vijay Rai <vijay.rai@freescale.com>
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

board/freescale/t104xrdb/t1042_pi_rcw.cfg

@@ -0,0 +1,7 @@
+#PBL preamble and RCW header
+aa55aa55 010e0100
+# serdes protocol 0x06
+0c18000e 0e000000 00000000 00000000
+06000002 00400002 e8106000 01000000
+00000000 00000000 00000000 00030810
+00000000 01fe0a06 00000000 00000000

board/freescale/t104xrdb/t1042_rcw.cfg

@@ -1,7 +1,7 @@
 #PBL preamble and RCW header
 aa55aa55 010e0100
-# serdes protocol 0x66
+# serdes protocol 0x86
 0c18000e 0e000000 00000000 00000000
-06000002 00400002 e8106000 01000000
-00000000 00000000 00000000 00030810
-00000000 01fe0a06 00000000 00000000
+86000002 80000002 ec027000 01000000
+00000000 00000000 00000000 00032810
+00000000 0342500f 00000000 00000000

include/configs/T104xRDB.h

@@ -19,6 +19,9 @@
 #define CONFIG_SYS_FSL_PBL_RCW $(SRCTREE)/board/freescale/t104xrdb/t1040_rcw.cfg
 #endif
 #ifdef CONFIG_T1042RDB_PI
+#define CONFIG_SYS_FSL_PBL_RCW $(SRCTREE)/board/freescale/t104xrdb/t1042_pi_rcw.cfg
+#endif
+#ifdef CONFIG_T1042RDB
 #define CONFIG_SYS_FSL_PBL_RCW $(SRCTREE)/board/freescale/t104xrdb/t1042_rcw.cfg
 #endif