[PATCH] powerpc: Fix building of power3 config on ppc32

The spinlock_types.h merge renamed the structure for raw_spinlock_t to
match ppc64.  In doing so some of the spinlock macros/functions needed to
be updated to match.  Apparently, this seems to only be caught when
building power3.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>