drm/ttm: inline ttm_bo_reserve and related calls

Makes lockdep a lot more useful.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --cc drivers/gpu/drm/ttm/ttm_bo.c
Simple merge

diff --cc drivers/gpu/drm/ttm/ttm_execbuf_util.c
Simple merge

diff --cc include/drm/ttm/ttm_bo_driver.h
Simple merge