[PATCH] m32r: set CHECKFLAGS properly

We do _not_ need "sparse" in sparse arguments ;-)

What we do need is __BIG_ENDIAN__; right now unconditional, when m32r
starts using CPU_LITTLE_ENDIAN, we'll need to adjust.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>