x86: move mem{cpy,set}.S to arch-specific library

If not these, what else are library functions.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>

xen/arch/x86/Makefile

@@ -48,8 +48,6 @@ obj-$(CONFIG_RETURN_THUNK) += indirect-thunk.o
 obj-$(CONFIG_PV) += ioport_emulate.o
 obj-y += irq.o
 obj-$(CONFIG_KEXEC) += machine_kexec.o
-obj-y += memcpy.o
-obj-y += memset.o
 obj-y += mm.o x86_64/mm.o
 obj-$(CONFIG_VM_EVENT) += monitor.o
 obj-y += mpparse.o

xen/arch/x86/lib/Makefile

@@ -1,3 +1,5 @@
 lib-y += copy-guest.o
 lib-y += copy-unsafe.o
 lib-y += generic-hweightl.o
+lib-y += memcpy.o
+lib-y += memset.o