package/libcamera: needs gcc >= 8

libcamera needs gcc >= 8 since bump to
8a845ab078c3fe12ac4edd16c8cbac5b7ec03b98 in commit
64f67ede and
https://git.libcamera.org/libcamera/libcamera.git/commit/?id=a7ab5ef1d2f9b05056db450e631a99a73382d589:

../output-1/build/libcamera-ba6435930f08e802cffc688d90f156a8959a0f86/meson.build:82:8: ERROR: Problem encountered: gcc version is too old, libcamera requires 8.0 or newer

Fixes:
 - http://autobuild.buildroot.org/results/f8eba0e564d03b83fcda4085baec16a4857c7d25



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>