v4l2allocator: allow importing dmabufs with vertical padding

When importing single-planar dmabufs that have padded height, the memory size
may be larger than sizeimage of the importing V4L2 queue. This is not a
problem, the importer can just ignore the padding lines at the end.
8 jobs for v4l2allocator-dmabuf-padded-height in 36 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Preparation
failed #176502
gst indent

00:00:30

passed #176501
manifest

00:00:36

 
  Build
skipped #176503
build fedora x86_64
 
  Test
skipped #176504
check fedora
 
  Full Builds
skipped #176506
build cerbero android universal
skipped #176507
build cerbero cross win32
skipped #176508
build cerbero cross win64
skipped #176505
build cerbero fedora x86_64
 
Name Stage Failure
failed
gst indent Preparation
     } else {
- group->buffer.bytesused = gst_memory_get_sizes (group->mem[0], NULL, NULL);
+ group->buffer.bytesused =
+ gst_memory_get_sizes (group->mem[0], NULL, NULL);
}

}


style diverges, please run gst-indent first
ERROR: Job failed: exit code 1