libcamera: add dependency on libudev

The device enumeration will depend on libudev, add the dependency to the
build system. This should be turned into a optional dependency once a
device enumerator not using udev is supported.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/libcamera/meson.build

@@ -16,7 +16,10 @@ includes = [
     libcamera_internal_includes,
 ]
 
+libudev = dependency('libudev')
+
 libcamera = shared_library('camera',
                            libcamera_sources,
                            install : true,
-                           include_directories : includes)
+                           include_directories : includes,
+                           dependencies : libudev)