Stefan Fiedler:

package/base/linux/linux.conf

@@ -431,6 +431,12 @@ main_lx() {
 		[ "$default" ] && \
 		  cp -vf $root/boot/vmlinux_$ver-rock.gz $root/boot/vmlinux.gz
 		;;
+	    arm)
+		eval $MAKE zImage
+		cp -vf arch/arm/boot/zImage $root/boot/zImage_${lx_kernelrelease}
+		[ "$default" ] && \
+		  cp -vf arch/arm/boot/zImage $root/boot/zImage
+		;;
 	    mips)
 		eval $MAKE vmlinux
 		$BUILDCC arch/mips/boot/elf2ecoff.c -o elf2ecoff