s390: cleanup arch/s390/kernel Makefile

Group all compiler flag modification lines together and sort them
alphabetically. This should hopefully prevent future bugs due to
missing flag modifications.
Also fix indentation at some places.
Reviewed-by: NPeter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/kernel/Makefile

@@ -2,20 +2,47 @@
 # Makefile for the linux kernel.
 #
 
-KCOV_INSTRUMENT_early.o := n
-KCOV_INSTRUMENT_sclp.o := n
-KCOV_INSTRUMENT_als.o := n
-
 ifdef CONFIG_FUNCTION_TRACER
-# Don't trace early setup code and tracing code
-CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
+
+# Do not trace tracer code
+CFLAGS_REMOVE_ftrace.o	= $(CC_FLAGS_FTRACE)
+
+# Do not trace early setup code
+CFLAGS_REMOVE_als.o	= $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_early.o	= $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_sclp.o	= $(CC_FLAGS_FTRACE)
+
+endif
+
+GCOV_PROFILE_als.o	:= n
+GCOV_PROFILE_early.o	:= n
+GCOV_PROFILE_sclp.o	:= n
+
+KCOV_INSTRUMENT_als.o	:= n
+KCOV_INSTRUMENT_early.o	:= n
+KCOV_INSTRUMENT_sclp.o	:= n
+
+UBSAN_SANITIZE_als.o	:= n
+UBSAN_SANITIZE_early.o	:= n
+UBSAN_SANITIZE_sclp.o	:= n
+
+#
+# Use -march=z900 for sclp.c and als.c to be able to print an error
+# message if the kernel is started on a machine which is too old
+#
+ifneq ($(CC_FLAGS_MARCH),-march=z900)
+CFLAGS_REMOVE_als.o	+= $(CC_FLAGS_MARCH)
+CFLAGS_als.o		+= -march=z900
+CFLAGS_REMOVE_sclp.o	+= $(CC_FLAGS_MARCH)
+CFLAGS_sclp.o		+= -march=z900
+AFLAGS_REMOVE_head.o	+= $(CC_FLAGS_MARCH)
+AFLAGS_head.o		+= -march=z900
 endif
 
 #
 # Passing null pointers is ok for smp code, since we access the lowcore here.
 #
-CFLAGS_smp.o	:= -Wno-nonnull
+CFLAGS_smp.o		:= -Wno-nonnull
 
 #
 # Disable tailcall optimizations for stack / callchain walking functions
@@ -30,28 +57,7 @@ CFLAGS_dumpstack.o	+= -fno-optimize-sibling-calls
 #
 CFLAGS_ptrace.o		+= -DUTS_MACHINE='"$(UTS_MACHINE)"'
 
-CFLAGS_sysinfo.o += -w
-
-#
-# Use -march=z900 for sclp.c and als.c to be able to print an error
-# message if the kernel is started on a machine which is too old
-#
-CFLAGS_REMOVE_sclp.o = $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_als.o = $(CC_FLAGS_FTRACE)
-ifneq ($(CC_FLAGS_MARCH),-march=z900)
-CFLAGS_REMOVE_sclp.o	+= $(CC_FLAGS_MARCH)
-CFLAGS_sclp.o		+= -march=z900
-CFLAGS_REMOVE_als.o	+= $(CC_FLAGS_MARCH)
-CFLAGS_als.o		+= -march=z900
-AFLAGS_REMOVE_head.o	+= $(CC_FLAGS_MARCH)
-AFLAGS_head.o		+= -march=z900
-endif
-GCOV_PROFILE_early.o := n
-GCOV_PROFILE_sclp.o := n
-GCOV_PROFILE_als.o := n
-UBSAN_SANITIZE_als.o := n
-UBSAN_SANITIZE_early.o := n
-UBSAN_SANITIZE_sclp.o := n
+CFLAGS_sysinfo.o	+= -w
 
 obj-y	:= traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
 obj-y	+= processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o