vdpau: revector macro to reduce line span

Signed-off-by: Anton Khirnov <anton@khirnov.net>
vdpau: add mapping for H.264 Extended profile

Signed-off-by: Anton Khirnov <anton@khirnov.net>
vdpau: add mapping for H.264 Constrained Baseline profile and fallback

Old VDPAU drivers do not support this newly defined profile, so falling
back to Main profile is necessary for backward binary compatibility.

Signed-off-by: Anton Khirnov <anton@khirnov.net>