scripts: add loongarch64

scripts/mkimg.base.sh

@@ -226,6 +226,7 @@ section_grub_efi() {
 	x86)	_format="i386-efi";   _efi="bootia32.efi" ;;
 	x86_64) _format="x86_64-efi"; _efi="bootx64.efi"  ;;
 	riscv64) _format="riscv64-efi"; _efi="bootriscv64.efi"  ;;
+	loongarch64) _format="loongarch64-efi"; _efi="bootloongarch64.efi"  ;;
 	*)	return 0 ;;
 	esac
 

scripts/mkimg.minirootfs.sh

@@ -20,6 +20,6 @@ profile_minirootfs() {
 		and minimal chroots."
 	image_ext=tar.gz
 	output_format=rootfs
-	arch="x86 x86_64 armhf armv7 aarch64 ppc64le s390x mips64 riscv64"
+	arch="x86 x86_64 armhf armv7 aarch64 ppc64le s390x mips64 riscv64 loongarch64"
 	rootfs_apks="busybox alpine-baselayout alpine-keys apk-tools libc-utils"
 }

scripts/mkimg.standard.sh

@@ -6,7 +6,7 @@ profile_standard() {
 	profile_base
 	profile_abbrev="std"
 	image_ext="iso"
-	arch="aarch64 armv7 x86 x86_64 ppc64le riscv64 s390x"
+	arch="aarch64 armv7 x86 x86_64 ppc64le riscv64 s390x loongarch64"
 	output_format="iso"
 	kernel_addons="xtables-addons"
 	case "$ARCH" in