qt: fix directfb dependency

Closes #2221

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

CHANGES

@@ -59,6 +59,7 @@
 	#2155: Compression lzo don't set for ubifs
 	#2166: [SECURITY] Update libpng to 1.2.44
 	#2167: Bump busybox to 1.17.0, convert to gentargets, drop 1.12, ...
+	#2221: Qt does not compile (dependencies not taken into account?)
 
 2010.05, Released May 30th, 2010:
 

package/qt/qt.mk

@@ -115,6 +115,7 @@ QT_CONFIGURE += -no-gfx-multiscreen
 endif
 ifeq ($(BR2_PACKAGE_QT_GFX_DIRECTFB),y)
 QT_CONFIGURE += -qt-gfx-directfb
+QT_DEP_LIBS+=directfb
 else
 QT_CONFIGURE += -no-gfx-directfb
 endif