board: ns3: define ddr memory layout

Add both DRAM banks memory information and
the corresponding MMU page table mappings.

Signed-off-by: Bharat Kumar Reddy Gooty <bharat.gooty@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/bcm_ns3_defconfig b/configs/bcm_ns3_defconfig
index 040e753..9adb44c 100644
--- a/configs/bcm_ns3_defconfig
+++ b/configs/bcm_ns3_defconfig
@@ -4,6 +4,7 @@
 CONFIG_SYS_TEXT_BASE=0xFF000000
 CONFIG_ENV_SIZE=0x80000
 CONFIG_NR_DRAM_BANKS=2
+CONFIG_OF_BOARD_SETUP=y
 CONFIG_LOGLEVEL=7
 CONFIG_SILENT_CONSOLE=y
 CONFIG_SILENT_U_BOOT_ONLY=y
@@ -21,3 +22,4 @@
 CONFIG_CLK_CCF=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
+CONFIG_SPL_OF_LIBFDT=y