bcm53xx: only fixup seama on D-Link DIR-885L

Just one device builds seama images so let's just fix up
seama on that one device. I guess the tool errors out but
this feels cleaner.

Cc: Hauke Mehrtens <[email protected]>
Cc: Rafał Miłecki <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
[rmilecki: drop "fixtrx" from D-Link case]
Signed-off-by: Rafał Miłecki <[email protected]>

target/linux/bcm53xx/base-files/etc/uci-defaults/09_fix_crc

@@ -1,5 +1,22 @@
+. /lib/functions.sh
+
+board=$(board_name)
+
 kernel_size=$(sed -n 's/mtd[0-9]*: \([0-9a-f]*\).*"\(kernel\|linux\)".*/\1/p' /proc/mtd)
 
-mtd ${kernel_size:+-c 0x$kernel_size} fixtrx firmware && exit 0
-mtd ${kernel_size:+-c 0x$kernel_size} fixseama firmware && exit 0
-exit 1
+fixtrx() {
+	mtd ${kernel_size:+-c 0x$kernel_size} fixtrx firmware && exit 0
+}
+
+fixseama() {
+	mtd ${kernel_size:+-c 0x$kernel_size} fixseama firmware && exit 0
+}
+
+case "$board" in
+dlink,dir-885l)
+	fixseama
+	;;
+*)
+	fixtrx
+	;;
+esac