gpu-viv-bin-mx6q: change output selection mechanism

Move output selection to Config.in. It easier to add new backends selection
(wayland, directfb, ...).

Tested-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/freescale-imx/gpu-viv-bin-mx6q/Config.in

@@ -44,6 +44,11 @@ config BR2_PACKAGE_GPU_VIV_BIN_MX6Q_OUTPUT_FB
 
 endchoice
 
+config BR2_PACKAGE_GPU_VIV_BIN_MX6Q_OUTPUT
+	string
+	default "x11" if BR2_PACKAGE_GPU_VIV_BIN_MX6Q_OUTPUT_X11
+	default "fb" if BR2_PACKAGE_GPU_VIV_BIN_MX6Q_OUTPUT_FB
+
 config BR2_PACKAGE_PROVIDES_LIBEGL
 	default "gpu-viv-bin-mx6q"
 

package/freescale-imx/gpu-viv-bin-mx6q/gpu-viv-bin-mx6q.mk

@@ -19,13 +19,7 @@ GPU_VIV_BIN_MX6Q_LICENSE_FILES = EULA
 GPU_VIV_BIN_MX6Q_REDISTRIBUTE = NO
 
 GPU_VIV_BIN_MX6Q_PROVIDES = libegl libgles libopenvg
-
-# DirectFB is not supported (wrong version)
-ifeq ($(BR2_PACKAGE_GPU_VIV_BIN_MX6Q_OUTPUT_X11),y)
-GPU_VIV_BIN_MX6Q_LIB_TARGET = x11
-else
-GPU_VIV_BIN_MX6Q_LIB_TARGET = fb
-endif
+GPU_VIV_BIN_MX6Q_LIB_TARGET = $(call qstrip,$(BR2_PACKAGE_GPU_VIV_BIN_MX6Q_OUTPUT))
 
 define GPU_VIV_BIN_MX6Q_EXTRACT_CMDS
 	$(call FREESCALE_IMX_EXTRACT_HELPER,$(DL_DIR)/$(GPU_VIV_BIN_MX6Q_SOURCE))