drm/nouveau/fb: implement various bits of work towards memory reclocking

Not even remotely ready for the vast majority of the world.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --cc drivers/gpu/drm/nouveau/Makefile
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/engine/device/nve0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/include/subdev/fb.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/clock/pllnva3.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/gddr5.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/nv40.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/nve0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/priv.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnv40.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnv41.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnv44.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnv49.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnv50.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnva3.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnvc0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/ramseq.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/fb/sddr3.c
Simple merge