package/kodi-screensaver-rsxs: needs xlib_libXmu

Fixes

/home/bernd/buildroot/output/build/kodi-screensaver-rsxs-195e0ec3fbbcb2ee2012cd560e42d05167f0f259/lib/rsxs-1.0/src/common.cc:42:27:
 fatal error: X11/Xmu/StdCmap.h: No such file or directory

X11/Xmu/StdCmap.h is included here:
https://github.com/notspiff/screensavers.rsxs/blob/master/lib/rsxs-1.0/src/common.cc#L48

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/kodi-screensaver-rsxs/Config.in

@@ -1,10 +1,12 @@
 config BR2_PACKAGE_KODI_SCREENSAVER_RSXS
 	bool "kodi-screensaver-rsxs"
 	depends on BR2_PACKAGE_KODI_GL # libglu
+	depends on BR2_PACKAGE_XORG7 # xlib_libXmu
+	select BR2_PACKAGE_XLIB_LIBXMU
 	help
 	  RSXS screensaver add-ons for Kodi
 
 	  https://github.com/notspiff/screensavers.rsxs
 
-comment "kodi-screensaver-rsxs needs OpenGL"
-	depends on !BR2_PACKAGE_KODI_GL
+comment "kodi-screensaver-rsxs depends on X.org and needs OpenGL"
+	depends on !BR2_PACKAGE_XORG7 || !BR2_PACKAGE_KODI_GL

package/kodi-screensaver-rsxs/kodi-screensaver-rsxs.mk

@@ -9,6 +9,6 @@ KODI_SCREENSAVER_RSXS_SITE = $(call github,notspiff,screensavers.rsxs,$(KODI_SCR
 KODI_SCREENSAVER_RSXS_LICENSE = GPLv3
 KODI_SCREENSAVER_RSXS_LICENSE_FILES = lib/rsxs-1.0/COPYING
 
-KODI_SCREENSAVER_RSXS_DEPENDENCIES = kodi
+KODI_SCREENSAVER_RSXS_DEPENDENCIES = kodi xlib_libXmu
 
 $(eval $(cmake-package))