[klibc] ppc32: address space fixes

- klibc.so should be linked at 0x0f800000, so there is actually some
  "reach" in the +/- 16 MB calls.
- On some distributions, the PowerPC linker defaults to the elf32ppc
  emulation rather than elf32ppclinux.  This affects the start address,
  among other things.  Thus, specify the emulation explicitly.
- Add -m32 if gcc supports it, just in case someone ever makes a distro
  which defaults to ppc64.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
1 file changed