mpv: fix wayland deps

The wayland backend requires libxkbcommon, so when wayland is available
select it to avoid build failure and obscure dependencies. Fixes:
http://autobuild.buildroot.net/results/ed2/ed2660361c9720e48dd5959f2711fd7f14031b0d/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mpv/Config.in

@@ -6,6 +6,8 @@ config BR2_PACKAGE_MPV
 	select BR2_PACKAGE_FFMPEG
 	select BR2_PACKAGE_FFMPEG_SWSCALE
 	select BR2_PACKAGE_ZLIB
+	# Select xkbcommon for wayland to avoid being misterious
+	select BR2_PACKAGE_LIBXKBCOMMON if BR2_PACKAGE_WAYLAND
 	help
 	  mpv is a fork of mplayer2 and MPlayer. It shares some features
 	  with the former projects while introducing many more.

package/mpv/mpv.mk

@@ -187,7 +187,7 @@ endif
 # wayland support
 ifeq ($(BR2_PACKAGE_WAYLAND),y)
 MPV_CONF_OPTS += --enable-wayland
-MPV_DEPENDENCIES += wayland
+MPV_DEPENDENCIES += libxkbcommon wayland
 else
 MPV_CONF_OPTS += --disable-wayland
 endif