fix: makefile: a3700: pad boot-image.bin for 4-bytes alignment

- In eMMC download mode, the ROM checks if the size and address
  are aligned to 4 byte.  If not aligned, it will report 
  SDMMC_ADDR_MISALIGN_ERROR.
- This patch align the boot-image.bin size to 4 bytes.

Change-Id: I97f390c78797ca403f0353bdd9c99625ab412eb3
Signed-off-by: allen yan <yanwei@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/40661
Reviewed-by: Wilson Ding <dingwei@marvell.com>
Tested-by: Wilson Ding <dingwei@marvell.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 6f87b6ee..9322e019 100644
--- a/Makefile
+++ b/Makefile
@@ -785,6 +785,7 @@ ifeq ($(PLAT),a3700)
 fip: ${BUILD_PLAT}/${FIP_NAME} ${DOIMAGETOOL}
 	$(shell truncate -s %128K ${BUILD_PLAT}/bl1.bin)
 	$(shell cat ${BUILD_PLAT}/bl1.bin ${BUILD_PLAT}/${FIP_NAME} > ${BUILD_PLAT}/${BOOT_IMAGE})
+	$(shell truncate -s %4 ${BUILD_PLAT}/${BOOT_IMAGE})
 	@echo
 	@echo "Building uart images"
 	$(TIMBUILD) $(TIMBLDUARTARGS)