[PATCH] Fix linking modules against crtsavres.o

Hi,

[ http://bugzilla.kernel.org/show_bug.cgi?id=11143 has it all]

targeting ppc(32), e.g. 405 (!fp), previously i got:
  CC      drivers/char/hw_random/rng-core.mod.o
  LD [M]  drivers/char/hw_random/rng-core.ko
/there/src/buildroot.git.ppc/build_powerpc_nofpu/staging_dir/usr/bin/powerpc-linux-uclibc-ld:
arch/powerpc/lib/crtsavres.o: No such file: No such file or directory

	* Makefile (LDFLAGS_MODULE_PREREQ): New variable to hold prerequisite
	files for modules.
	* arch/powerpc/Makefile: add crtsavres.o to LDFLAGS_MODULE_PREREQ.
	* scripts/Makefile.modpost (cmd_as_o_S): Copy from Makefile.build.
	(cmd_ld_ko_o): Also link LDFLAGS_MODULE_PREREQ.
	Provide rule to build objects from assembler.

The attached patch (same as attached to abovementioned bug) fixes this.
I'm asking the ppc maintainers or you, Sam, to consider something to
that effect for inclusing in the stable series.
thanks,