git: drm/ttm: Sync ttm_page_alloc.c with Linux

[Francois Tigeot]

commit 6af927c246477a611cb86e64d0fc460000a39284
Author: François Tigeot <***@wolfpond.org>
Date: Sun Nov 25 16:54:27 2018 +0100

drm/ttm: Sync ttm_page_alloc.c with Linux

Summary of changes:
sys/dev/drm/ttm/ttm_page_alloc.c | 208 ++++++++++++++++++---------------------
1 file changed, 94 insertions(+), 114 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/6af927c246477a611cb86e64d0fc460000a39284