Backport of "kmssink: Do not source using padded width/height" into 1.18
requested to merge tpm/gst-plugins-bad:backport-mr-1580-into-1.18-kmssink-display-size-fix into 1.18
Backport of !1580 (merged) "kmssink: Do not source using padded width/height".
Commits:
- 671d9fed kmssink: Do not source using padded width/height