geoclue.conf.in: add a unix socket option

Add gnss_share unix socket description

Signed-off-by: Angus Ainslie <angus@akkea.ca>
5 jobs for unix-socket in 4 minutes and 26 seconds
Status Job ID Name Coverage
  Package
passed #357981
librem5
package-pureos-byzantium

00:01:22

passed #357982
librem5:arm64
package-pureos-byzantium:arm64

00:04:26

 
  Test Package
passed #357983
librem5
autopkgtest-pureos-byzantium-package

00:00:46

passed #357985
librem5
check-tarball

00:00:51

passed #357984
librem5
lintian-pureos-byzantium-package

00:00:44