package/x11r7/xserver_xorg-server: fix xephyr build with kdrive

Fix the following xephyr build failure with kdrive raised since commit
eedbd6f97d51a0049ec512de26541465403ab06f:

checking for XEPHYR... no
configure: error: Package requirements (xau xdmcp xcb xcb-shape xcb-render xcb-renderutil xcb-aux xcb-image xcb-icccm xcb-shm >= 1.9.3 xcb-keysyms xcb-randr xcb-xkb xcb-xv) were not met:

Package 'xcb-renderutil', required by 'virtual:world', not found
Package 'xcb-aux', required by 'virtual:world', not found
Package 'xcb-image', required by 'virtual:world', not found
Package 'xcb-icccm', required by 'virtual:world', not found
Package 'xcb-keysyms', required by 'virtual:world', not found

Fixes:
 - http://autobuild.buildroot.org/results/baba218c879b67bfbadc9c25d34313abc76397bc
 - http://autobuild.buildroot.org/results/9471b77db9aefa2fd0e5be61ea84709183511623

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/x11r7/xserver_xorg-server/Config.in

@@ -85,6 +85,10 @@ config BR2_PACKAGE_XSERVER_XORG_SERVER_XVFB
 
 config BR2_PACKAGE_XSERVER_XORG_SERVER_XEPHYR
 	bool "Xephyr server"
+	select BR2_PACKAGE_XCB_UTIL_IMAGE if BR2_PACKAGE_XSERVER_XORG_SERVER_KDRIVE
+	select BR2_PACKAGE_XCB_UTIL_KEYSYMS if BR2_PACKAGE_XSERVER_XORG_SERVER_KDRIVE
+	select BR2_PACKAGE_XCB_UTIL_RENDERUTIL if BR2_PACKAGE_XSERVER_XORG_SERVER_KDRIVE
+	select BR2_PACKAGE_XCB_UTIL_WM if BR2_PACKAGE_XSERVER_XORG_SERVER_KDRIVE
 	help
 	  Xephyr nested X server; successor to Xnest.
 

package/x11r7/xserver_xorg-server/xserver_xorg-server.mk

@@ -84,6 +84,13 @@ XSERVER_XORG_SERVER_CONF_OPTS += \
 	--disable-glx \
 	--disable-dri
 
+ifeq ($(BR2_PACKAGE_XSERVER_XORG_SERVER_XEPHYR),y)
+XSERVER_XORG_SERVER_DEPENDENCIES += \
+	xcb-util-image \
+	xcb-util-keysyms \
+	xcb-util-renderutil \
+	xcb-util-wm
+endif
 else # modular
 XSERVER_XORG_SERVER_CONF_OPTS += --disable-kdrive
 endif