sh: Add -Werror for clean directories.

Follow the MIPS and sparc64 changes for -Werror instrumentation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/cchips/hd6446x/Makefile

 obj-$(CONFIG_HD64461)	+= hd64461.o
 obj-$(CONFIG_HD64465)	+= hd64465/
+
+EXTRA_CFLAGS += -Werror

arch/sh/cchips/voyagergx/Makefile

@@ -6,3 +6,4 @@ obj-y	:= irq.o setup.o
 
 obj-$(CONFIG_USB_OHCI_HCD)	+= consistent.o
 
+EXTRA_CFLAGS += -Werror

arch/sh/kernel/Makefile

@@ -10,7 +10,6 @@ obj-y	:= debugtraps.o io.o io_generic.o irq.o machvec.o process.o ptrace.o \
 
 obj-y				+= cpu/ timers/
 obj-$(CONFIG_VSYSCALL)		+= vsyscall/
-
 obj-$(CONFIG_SMP)		+= smp.o
 obj-$(CONFIG_CF_ENABLER)	+= cf-enabler.o
 obj-$(CONFIG_SH_STANDARD_BIOS)	+= sh_bios.o
@@ -22,3 +21,5 @@ obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump.o
 obj-$(CONFIG_PM)		+= pm.o
 obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
+
+EXTRA_CFLAGS += -Werror

arch/sh/lib/Makefile

@@ -9,3 +9,5 @@ memcpy-y			:= memcpy.o
 memcpy-$(CONFIG_CPU_SH4)	:= memcpy-sh4.o
 
 lib-y	+= $(memcpy-y)
+
+EXTRA_CFLAGS += -Werror

arch/sh/mm/Makefile

@@ -33,3 +33,5 @@ endif
 obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
 obj-$(CONFIG_32BIT)		+= pmb.o
 obj-$(CONFIG_NUMA)		+= numa.o
+
+EXTRA_CFLAGS += -Werror

arch/sh/oprofile/Makefile

@@ -15,3 +15,4 @@ profdrvr-$(CONFIG_CPU_SUBTYPE_SH7091)	:= op_model_sh7750.o
 
 oprofile-y				:= $(DRIVER_OBJS) $(profdrvr-y)
 
+EXTRA_CFLAGS += -Werror