drm: bring savage inline with latest CVS
apply some whitespace cleanup and add wrappers for MTRR for OS calls
From: Eric Anholt <anholt@freebsd.org> + Dave Airlie <airlied@linux.ie>
Signed-off-by: Dave Airlie <airlied@linux.ie>
authored by Dave Airlie and committed by Dave Airlie 269dc512 3528af1b