powerpc32: checksum_wrappers_64 becomes checksum_wrappers

The powerpc64 checksum wrapper functions adds csum_and_copy_to_user()
which otherwise is implemented in include/net/checksum.h by using
csum_partial() then copy_to_user()

Those two wrapper fonctions are also applicable to powerpc32 as it is
based on the use of csum_partial_copy_generic() which also
exists on powerpc32

This patch renames arch/powerpc/lib/checksum_wrappers_64.c to
arch/powerpc/lib/checksum_wrappers.c and
makes it non-conditional to CONFIG_WORD_SIZE

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index a47e142..e46b068 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -22,8 +22,7 @@
 obj64-$(CONFIG_ALTIVEC)	+= vmx-helper.o
 
 ifeq ($(CONFIG_GENERIC_CSUM),)
-obj-y			+= checksum_$(CONFIG_WORD_SIZE).o
-obj-$(CONFIG_PPC64)	+= checksum_wrappers_64.o
+obj-y			+= checksum_$(CONFIG_WORD_SIZE).o checksum_wrappers.o
 endif
 
 obj-$(CONFIG_PPC_EMULATE_SSTEP)	+= sstep.o ldstfp.o