powerpc/85xx: Added secure boot option for P2041RDB boards

Signed-off-by: NKuldip Giroh <kuldip.giroh@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

boards.cfg

@@ -668,6 +668,7 @@ P2020RDB-PC_36BIT_SDCARD     powerpc     mpc85xx     p1_p2_rdb_pc        freesca
 P2020RDB-PC_36BIT_SPIFLASH   powerpc     mpc85xx     p1_p2_rdb_pc        freescale      -           p1_p2_rdb_pc:P2020RDB,36BIT,SPIFLASH
 P2041RDB                     powerpc     mpc85xx     p2041rdb            freescale
 P2041RDB_SDCARD              powerpc     mpc85xx     p2041rdb            freescale      -           P2041RDB:RAMBOOT_PBL,SDCARD,SYS_TEXT_BASE=0xFFF80000
+P2041RDB_SECURE_BOOT         powerpc     mpc85xx     p2041rdb            freescale      -           P2041RDB:SECURE_BOOT
 P2041RDB_SPIFLASH            powerpc     mpc85xx     p2041rdb            freescale      -           P2041RDB:RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000
 P3041DS                      powerpc     mpc85xx     corenet_ds          freescale
 P3041DS_NAND		     powerpc     mpc85xx     corenet_ds          freescale      -           P3041DS:RAMBOOT_PBL,NAND,SYS_TEXT_BASE=0xFFF80000