powerpc/p2041: add RCW file for P2041RDB

All the dev boards of Freescale's QorIQ family have a RCW that is
supported by the u-boot.pbl build target. This patch adds one for the
P2041 dev board.

This RCW is suitable for the RAMBOOT_PBL scenarios and was tested on the
P2041RDB booting from the eSPI NOR Flash (P2041RDB_SPIFLASH config).

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

board/freescale/corenet_ds/rcw_p2041rdb.cfg

@@ -0,0 +1,11 @@
+#
+# Default RCW for P2041RDB.
+#
+
+#PBL preamble and RCW header
+aa55aa55 010e0100
+#64 bytes RCW data
+12600000 00000000 241C0000 00000000
+649FA0C1 C3C02000 58000000 40000000
+00000000 00000000 00000000 D0030F07
+00000000 00000000 00000000 00000000