arm64: kbuild: remove compressed images on 'make ARCH=arm64 (dist)clean'

Since v4.3-rc1 commit 0723c05 ("arm64: enable more compressed
Image formats"), it is possible to build Image.{bz2,lz4,lzma,lzo}
AArch64 images. However, the commit missed adding support for removing
those images on 'make ARCH=arm64 (dist)clean'.

Fix this by adding them to the target list.
Make sure to match the order of the recipes in the makefile.

Cc: [email protected] # v4.3+
Fixes: 0723c05 ("arm64: enable more compressed Image formats")
Signed-off-by: Dirk Behme <[email protected]>
Signed-off-by: Eugeniu Rosca <[email protected]>
Reviewed-by: Masahiro Yamada <[email protected]>
Signed-off-by: Will Deacon <[email protected]>

Author: dirkbehme

arch/arm64/boot/Makefile

@@ -16,7 +16,7 @@
 
 OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
 
-targets := Image Image.gz
+targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo
 
 $(obj)/Image: vmlinux FORCE
 	$(call if_changed,objcopy)