forgotten embedded powerpc 3.1 2 line patch

[David Edelsohn]

	Joel's patch changes the wrong macro.  To affect the option with
which GNU Assembler is invoked, ASM_CPU_SPEC should be modified.

	Obviously that option in GNU AS only exists in the latest Binutils
release, but relying on the latest Assembler to for supporting those
processors in the latest GCC release should be okay.

	If the correct macro is changed, this patch is okay.

David

	P.S. Is this really so important that it cannot wait until GCC
3.1.1?