s390: remove "64" suffix from a couple of files

Rename a couple of files to get rid of the "64" suffix.
"git blame" will still work.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/boot/compressed/Makefile

@@ -6,7 +6,7 @@
 
 targets	:= vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
-targets += misc.o piggy.o sizes.h head64.o
+targets += misc.o piggy.o sizes.h head.o
 
 KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUX_INCLUDE) -O2
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
@@ -17,7 +17,7 @@ KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
 GCOV_PROFILE := n
 
 OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o)
-OBJECTS += $(obj)/head64.o $(obj)/misc.o $(obj)/piggy.o
+OBJECTS += $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o
 
 LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS)
@@ -32,8 +32,8 @@ quiet_cmd_sizes = GEN $@
 $(obj)/sizes.h: vmlinux
 	$(call if_changed,sizes)
 
-AFLAGS_head64.o += -I$(obj)
-$(obj)/head64.o: $(obj)/sizes.h
+AFLAGS_head.o += -I$(obj)
+$(obj)/head.o: $(obj)/sizes.h
 
 CFLAGS_misc.o += -I$(obj)
 $(obj)/misc.o: $(obj)/sizes.h