Convert CONFIG_RAMBOOT_PBL et al to Kconfig

This converts the following to Kconfig:
   CONFIG_RAMBOOT_PBL
   CONFIG_SYS_FSL_PBL_PBI
   CONFIG_SYS_FSL_PBL_RCW

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ls1021aqds_sdcard_ifc_defconfig b/configs/ls1021aqds_sdcard_ifc_defconfig
index a9b40045..e87cf1d 100644
--- a/configs/ls1021aqds_sdcard_ifc_defconfig
+++ b/configs/ls1021aqds_sdcard_ifc_defconfig
@@ -23,7 +23,10 @@
 CONFIG_SYS_LOAD_ADDR=0x82000000
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
-CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SD_BOOT"
+CONFIG_SYS_EXTRA_OPTIONS="SD_BOOT"
+CONFIG_RAMBOOT_PBL=y
+CONFIG_SYS_FSL_PBL_PBI="board/freescale/ls1021aqds/ls102xa_pbi.cfg"
+CONFIG_SYS_FSL_PBL_RCW="board/freescale/ls1021aqds/ls102xa_rcw_sd_ifc.cfg"
 CONFIG_SD_BOOT=y
 CONFIG_BOOTDELAY=3
 CONFIG_SILENT_CONSOLE=y