drivers: Add iproc spi driver

Add iproc spi driver

Change-Id: I652efab1efd9c487974dae9cb9d98b9b8e3759c4
Signed-off-by: Sheetal Tigadoli <sheetal.tigadoli@broadcom.com>
diff --git a/plat/brcm/board/stingray/platform.mk b/plat/brcm/board/stingray/platform.mk
index 8d2119d..20ebcdd 100644
--- a/plat/brcm/board/stingray/platform.mk
+++ b/plat/brcm/board/stingray/platform.mk
@@ -172,6 +172,10 @@
 # Enable Chip OTP driver
 DRIVER_OCOTP_ENABLE := 1
 
+ifneq (${WARMBOOT_DDR_S3_SUPPORT},)
+DRIVER_SPI_ENABLE := 1
+endif
+
 include plat/brcm/board/common/board_common.mk
 
 SOC_DIR			:= 	brcm/board/stingray