codec2: vts-video: align input buffer size for decoders

Hardware decoders expect minimum PAGE_SIZE alignment.

Test:
   VtsHalMediaC2V1_0TargetVideoDecTest -C c2.qti.hevc.decoder -P /sdcard/res/ -I default

Bug: 135427312

Change-Id: I14ee2f93d644450679500d507e775ad16afead6d
2 files changed