drm/nouveau: Fix indentation-related checkpatch.pl error messages.

Fix 'ERROR: code indent should use tabs where possible'
Fix 'ERROR: space required before the open parenthesis ('

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>

diff --cc drivers/gpu/drm/nouveau/nouveau_drv.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/nouveau_mem.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv50_grctx.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nvc0_graph.c
Simple merge