video_osd: Add ihs_video_out driver

Add a driver for IHS OSDs on IHS FPGAs.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 9cec564..290747b 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -28,6 +28,7 @@
 obj-$(CONFIG_CFB_CONSOLE) += cfb_console.o
 obj-$(CONFIG_FORMIKE) += formike.o
 obj-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o
+obj-$(CONFIG_IHS_VIDEO_OUT) += ihs_video_out.o
 obj-$(CONFIG_LD9040) += ld9040.o
 obj-$(CONFIG_LG4573) += lg4573.o
 obj-$(CONFIG_LOGICORE_DP_TX) += logicore_dp_tx.o