drm/amd/display: Don't force UPDATE_TYPE_FULL if stream_update has hdr_static_metadata

This was missed when pushing public patch for 3e3a40b03847 (drm/amd/display:
Updated HDR Static Metadata to directly take info packet raw)

This is currently no problem yet since we're not doing HDR on Linux yet.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>