scripts: add modloopfw support

this is needed for firware which is not automatically detected.

(cherry picked from commit 680b40d3)

scripts/mkimg.arm.sh

@@ -75,6 +75,7 @@ profile_rpi() {
 	kernel_cmdline="dwc_otg.lpm_enable=0 console=tty1"
 	initfs_features="base bootchart squashfs ext4 f2fs kms mmc raid scsi usb"
 	hostname="rpi"
+	modloopfw="brcm/brcmfmac43455-sdio.clm_blob"
 }
 
 build_uboot() {

scripts/mkimg.base.sh

@@ -12,6 +12,7 @@ build_kernel() {
 		--arch "$ARCH" \
 		--package "$_pkgs" \
 		--feature "$initfs_features" \
+		--modloopfw "$modloopfw" \
 		--repositories-file "$APKROOT/etc/apk/repositories" \
 		"$DESTDIR"
 }