nv50: fix some h264 interlaced decoding on vp2

Some videos specify mb_adaptive_frame_field_flag instead of
field_pic_flag. This implies that the pic height needs to be halved, and
this field needs to be passed to the VP engine.

Cc: "9.2" mesa-stable@lists.freedesktop.org

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
i965: Add a new debug mode for the VUE map

INTEL_DEBUG=vue now emits a listing of each slot in the VUE map,
and the corresponding interpolation mode.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
i965: add missing BRW_NEW_INTERPOLATION_MAP to state dump

Makes this flag appear in the output for INTEL_DEBUG=state

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>