xen/arm: Remove the makefile target xen.axf

Since commit 4557c22 "xen: arm: rewrite start of day page table and cpu
bring up", Xen requires to be launched in NS HYP/EL2.

xen.axf is generated in order to directly boot Xen on ARM models (e.g
Foundation). However they usually start in secure mode, which mean Xen
cannot boot.

The way forward to boot Xen on models is using either EFI or
bootwrapper [1].

[1] https://git.kernel.org/cgit/linux/kernel/git/mark/boot-wrapper-aarch64.git/

Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

xen/arch/arm/Makefile

@@ -70,18 +70,12 @@ else
 all_symbols =
 endif
 
-$(TARGET): $(TARGET)-syms $(TARGET).axf
+$(TARGET): $(TARGET)-syms
 	$(OBJCOPY) -O binary -S $< $@
 ifeq ($(CONFIG_ARM_64),y)
 	ln -sf $(notdir $@)  ../../$(notdir $@).efi
 endif
 
-$(TARGET).axf: $(TARGET)-syms
-	# XXX: VE model loads by VMA so instead of
-	# making a proper ELF we link with LMA == VMA and adjust crudely
-	$(OBJCOPY) --change-addresses +0x80000000 $< $@
-	$(STRIP) $@
-
 ifeq ($(CONFIG_LTO),y)
 # Gather all LTO objects together
 prelink_lto.o: $(ALL_OBJS)
@@ -130,5 +124,4 @@ dtb.o: $(CONFIG_DTB_FILE)
 clean::
 	rm -f asm-offsets.s xen.lds
 	rm -f $(BASEDIR)/.xen-syms.[0-9]*
-	rm -f $(TARGET).axf
 	rm -f $(TARGET).efi