bcm63xx: Fix sysupgrade for tag-version 7 and 8

Fix sysupgrade for tag-version 7 and 8.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

SVN-Revision: 35724

target/linux/brcm63xx/base-files/lib/upgrade/platform.sh

@@ -2,7 +2,7 @@ PART_NAME=linux
 platform_check_image() {
 	[ "$ARGC" -gt 1 ] && return 1
 	case "$(get_magic_word "$1")" in
-		3600)
+		3600|3700|3800)
 			# 6348GW-11 boards use openwrt-96348GW-11-squashfs-cfe.bin files
 			return 0
 			;;