From: Paul Mundt <lethal@Linux-SH.ORG>

This fixes up a compile error occuring with ptep_get_and_clear() existing in
pgalloc.h.  We move it to a somewhat more sensible location instead, and take
this opportunity to make some cleanups for use of generic code in the SH-3
case, etc.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>