linux: add 'Image' as the image name for aarch64

On aarch64, the image name is always Image, so let's add support for
that.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux/Config.in

@@ -225,6 +225,10 @@ config BR2_LINUX_KERNEL_SIMPLEIMAGE
 	select BR2_LINUX_KERNEL_DTS_SUPPORT
 	select BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
 
+config BR2_LINUX_KERNEL_IMAGE
+	bool "Image"
+	depends on BR2_aarch64
+
 config BR2_LINUX_KERNEL_LINUX_BIN
 	bool "linux.bin"
 	depends on BR2_microblaze

linux/linux.mk

@@ -111,6 +111,8 @@ else ifeq ($(BR2_LINUX_KERNEL_CUIMAGE),y)
 LINUX_IMAGE_NAME = cuImage.$(KERNEL_DTS_NAME)
 else ifeq ($(BR2_LINUX_KERNEL_SIMPLEIMAGE),y)
 LINUX_IMAGE_NAME = simpleImage.$(KERNEL_DTS_NAME)
+else ifeq ($(BR2_LINUX_KERNEL_IMAGE),y)
+LINUX_IMAGE_NAME = Image
 else ifeq ($(BR2_LINUX_KERNEL_LINUX_BIN),y)
 LINUX_IMAGE_NAME = linux.bin
 else ifeq ($(BR2_LINUX_KERNEL_VMLINUX_BIN),y)