package/matchbox: xlib-libXcursor is an optional dependency

matchbox selects xlib-libXcursor, but does not build-depend on it.

But xlib-libXcursor is only an optional dependency.

Fix that by removing the select, and properly build-depend on it when
it is enabled.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/matchbox/Config.in

@@ -4,7 +4,6 @@ menuconfig BR2_PACKAGE_MATCHBOX
 	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_FONTCONFIG
 	select BR2_PACKAGE_EXPAT
-	select BR2_PACKAGE_XLIB_LIBXCURSOR
 	select BR2_PACKAGE_MATCHBOX_LIB
 	help
 	  Matchbox is an Open Source base environment for the X Window

package/matchbox/matchbox.mk

@@ -35,4 +35,8 @@ else
 MATCHBOX_CONF_OPTS += --disable-session
 endif
 
+ifeq ($(BR2_PACKAGE_XLIB_LIBXCURSOR),y)
+MATCHBOX_DEPENDENCIES += xlib_libXcursor
+endif
+
 $(eval $(autotools-package))