Put v4l2_codec2 underneath a soong namespace am: f83441a3c9 am: ae52ea56b2 am: bce2d851c3

Original change: https://android-review.googlesource.com/c/platform/external/v4l2_codec2/+/1928162

Change-Id: If30632e779dec49f209a1ac196df1570f9e7fd48