multimedia/libv4l: Update v4l_compat, libv4l and v4l-utils to 1.23.0
NOTE: This version tag currently only exists for FreeBSD and has not yet
been made upstream and is based on the latest available v4l-utils.
Approved by: pi (implicit)
multimedia/libv4l: fix build on big-endian architectures
Include sys/endian.h:
v4l2-ctl-vidcap.cpp:378:38: error: 'le16toh' was not declared in this scope