drm/gk104/i2c: add aux channel interrupt driver

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/i2c.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/i2c/nve0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
Simple merge