package/libv4l: bump version to 1.18.0

package/libv4l: bump version to 1.18.0

- remove 0001-fixup-lfs-mismatch-in-preload-libraries.patch
  (Upstream applied [1])
- remove 0002-keytable-fix-EVIOCSCLOCKID-related-compile-failure.patch
  (Upstream applied [2])
- remove 0003-Build-sdlcam-only-if-jpeg-is-enabled.patch
  (Upstream applied [3])
- remove 0004-v4l2-compliance-needs-fork.patch
  (Upstream applied [4])

Despite all patches (specially the ones touching
configure.ac/Makefile.am) keep LIBV4L_AUTORECONF = YES to get correct
utils/qv4l linker flags (seems the original debian based libtool sets
a wrong link_all_deplibs parameter), see [5] for details.

[1] https://git.linuxtv.org/v4l-utils.git/commit/?id=9f0354c3320f3cc62983f726bfed66e1d0c21f83
[2] https://git.linuxtv.org/v4l-utils.git/commit/?id=a3367e92f4b06667a36fb9485f22f7df52891a2f
[3] https://git.linuxtv.org/v4l-utils.git/commit/?id=692c2f0f35dd663e84d363867f2841d387726154
[4] https://git.linuxtv.org/v4l-utils.git/commit/?id=577ab225929c4e8dce7d2b911eeed38469a559bb
[5] http://lists.busybox.net/pipermail/buildroot/2019-October/261558.html

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