drm/nouveau: use drm debug levels

- Use driver level (0x2) for NV_DEBUG instead of all levels
- Create a NV_DEBUG_KMS for KMS level (0x4) and use them in modesetting code
- Remove a few odd NV_TRACE calls and replace some of them with NV_DEBUG_KMS or
NV_INFO

Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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

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

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

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

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

diff --cc drivers/gpu/drm/nouveau/nv04_crtc.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv04_dac.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv04_dfp.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv04_display.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv17_tv.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv50_crtc.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv50_cursor.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv50_dac.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv50_display.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/nv50_sor.c
Simple merge