x86: unify arch/x86/lib/Makefile(s)

Trivial unification of Makefiles for the
x86 specific library part.
Linking order is slightly modified but should be harmless.

Tested doing a defconfig build before and after and saw
no build changes.

It adds almost as many lines as it deletes - bacause
I broke a few lines up fo readability in the Makefile.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/lib/Makefile

+#
+# Makefile for x86 specific library files.
+#
+
+obj-$(CONFIG_SMP) := msr-on-cpu.o
+
+lib-y := delay_$(BITS).o
+lib-y += usercopy_$(BITS).o getuser_$(BITS).o putuser_$(BITS).o
+lib-y += memcpy_$(BITS).o
+
 ifeq ($(CONFIG_X86_32),y)
-include ${srctree}/arch/x86/lib/Makefile_32
+        lib-y += checksum_32.o
+        lib-y += strstr_32.o
+        lib-y += bitops_32.o semaphore_32.o string_32.o
+
+        lib-$(CONFIG_X86_USE_3DNOW) += mmx_32.o
 else
-include ${srctree}/arch/x86/lib/Makefile_64
+        obj-y += io_64.o iomap_copy_64.o
+
+        CFLAGS_csum-partial_64.o := -funroll-loops
+
+        lib-y += csum-partial_64.o csum-copy_64.o csum-wrappers_64.o
+        lib-y += thunk_64.o clear_page_64.o copy_page_64.o
+        lib-y += bitstr_64.o bitops_64.o
+        lib-y += memmove_64.o memset_64.o
+        lib-y += copy_user_64.o rwlock_64.o copy_user_nocache_64.o
 endif

arch/x86/lib/Makefile_32

-#
-# Makefile for i386-specific library files..
-#
-
-
-lib-y = checksum_32.o delay_32.o usercopy_32.o getuser_32.o putuser_32.o memcpy_32.o strstr_32.o \
-	bitops_32.o semaphore_32.o string_32.o
-
-lib-$(CONFIG_X86_USE_3DNOW) += mmx_32.o
-
-obj-$(CONFIG_SMP)	+= msr-on-cpu.o

arch/x86/lib/Makefile_64

-#
-# Makefile for x86_64-specific library files.
-#
-
-CFLAGS_csum-partial_64.o := -funroll-loops
-
-obj-y := io_64.o iomap_copy_64.o
-obj-$(CONFIG_SMP)	+= msr-on-cpu.o
-
-lib-y := csum-partial_64.o csum-copy_64.o csum-wrappers_64.o delay_64.o \
-	usercopy_64.o getuser_64.o putuser_64.o  \
-	thunk_64.o clear_page_64.o copy_page_64.o bitstr_64.o bitops_64.o
-lib-y += memcpy_64.o memmove_64.o memset_64.o copy_user_64.o rwlock_64.o copy_user_nocache_64.o