We don't actually need this.

The reason why the ppc64 build exploded was that I had CC="gcc -m64", and even
though the build system turns that into "gcc -m64 -m32", that is,
surprisingly, equivalent to "gcc -m64".

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>