drm/radeon/kms: hpd cleanup

- Use radeon hpd enum consistently (in both hotplug and dp)
- Legacy r100 with DVI should be HPD_1 not NONE

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

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

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

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

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