package/libv4l: bump version to 1.16.3

Changes since 1.16.2:
  - Makefile.am: don't use relative paths for include
  - keytable: do not install bpf protocols decoders with execute permission

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>