meson: Add option to disable libdrm support

Signed-off-by: Povilas Kanapickas <povilas@radix.lt>
5 jobs for meson-drm-option in 8 minutes and 42 seconds (queued for 21 seconds)
Status Name Job ID Coverage
  Docker Image
passed debian-buster #12964423

00:00:27

 
  Build And Test
passed autotools #12964424

00:08:14

passed meson #12964425

00:03:58

passed meson-noglamor #12964426

00:03:23

passed mingw-cross-build #12964427

00:01:45