fip: s7d: correct payload info to align 512 [1/1]

PD#SWPL-162624

Problem:
current payload info align 4k waste sz

Solution:
align s7d payload info offset to align just 512

Verify:
bm201

Change-Id: Icbb9a3bcf8c242b4893e88edcb71b20606c82a00
Signed-off-by: Sam Wu <yihui.wu@amlogic.com>
diff --git a/s7d/build.sh b/s7d/build.sh
index 1533cd9..8dd9c77 100755
--- a/s7d/build.sh
+++ b/s7d/build.sh
@@ -463,7 +463,7 @@
 	sector=512
 	seek=0
 	seek_sector=0
-	dateStamp=A4-${CHIPSET_NAME}-`date +%y%m%d%H%M%S`
+	dateStamp=S7D-${CHIPSET_NAME}-`date +%y%m%d%H%M%S`
 
 	echo @AMLBOOT > ${file_info_cfg_temp}
 	dd if=${file_info_cfg_temp} of=${file_info_cfg} bs=1 count=8 conv=notrunc &> /dev/null
@@ -508,7 +508,7 @@
 	rm -f ${file_info_cfg}
 	mv -f ${file_info_cfg}.sha256 ${file_info_cfg}
 
-	dd if=${file_info_cfg} of=${bootloader} bs=512 seek=440 conv=notrunc status=none
+	dd if=${file_info_cfg} of=${bootloader} bs=512 seek=438 conv=notrunc status=none
 
 	add_blob_hdr ${bootloader}