drm/radeon/kms: add support for multiple fence queues v2

For supporting multiple CP ring buffers, async DMA
engines and UVD.  We still need a way to synchronize
between engines.

v2 initialize unused fence driver ring to avoid issue in
   suspend/unload

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --cc drivers/gpu/drm/radeon/evergreen.c
Simple merge

diff --cc drivers/gpu/drm/radeon/ni.c
Simple merge

diff --cc drivers/gpu/drm/radeon/r100.c
Simple merge

diff --cc drivers/gpu/drm/radeon/r300.c
Simple merge

diff --cc drivers/gpu/drm/radeon/r420.c
Simple merge

diff --cc drivers/gpu/drm/radeon/r520.c
Simple merge

diff --cc drivers/gpu/drm/radeon/r600.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon.h
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_benchmark.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_device.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_fence.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_pm.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_ring.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_test.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_ttm.c
Simple merge

diff --cc drivers/gpu/drm/radeon/rs400.c
Simple merge

diff --cc drivers/gpu/drm/radeon/rs600.c
Simple merge

diff --cc drivers/gpu/drm/radeon/rs690.c
Simple merge

diff --cc drivers/gpu/drm/radeon/rv515.c
Simple merge

diff --cc drivers/gpu/drm/radeon/rv770.c
Simple merge