kernel: add kmod-fb-tft

This module adds support for small TFT LCD display modules. While this
module also exists in the 4.9 kernel, we are not going to support this
kernel in the next major release, so don't make it available for 4.9.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

package/kernel/linux/modules/video.mk

@@ -183,6 +183,28 @@ endef
 $(eval $(call KernelPackage,fb-sys-ram))
 
 
+define KernelPackage/fb-tft
+  SUBMENU:=$(VIDEO_MENU)
+  TITLE:=Support for small TFT LCD display modules
+  DEPENDS:= \
+	  @GPIO_SUPPORT @!LINUX_3_18 @!LINUX_4_9 +kmod-backlight \
+	  +kmod-fb +kmod-fb-sys-fops +kmod-fb-sys-ram +kmod-spi-bitbang
+  KCONFIG:= \
+       CONFIG_FB_BACKLIGHT=y \
+       CONFIG_FB_DEFERRED_IO=y \
+       CONFIG_FB_TFT
+  FILES:= \
+       $(LINUX_DIR)/drivers/staging/fbtft/fbtft.ko
+  AUTOLOAD:=$(call AutoLoad,08,fbtft)
+endef
+
+define KernelPackage/fb-tft/description
+  Support for small TFT LCD display modules
+endef
+
+$(eval $(call KernelPackage,fb-tft))
+
+
 define KernelPackage/drm
   SUBMENU:=$(VIDEO_MENU)
   TITLE:=Direct Rendering Manager (DRM) support