video_display: Add Xilinx LogiCore DP TX

Add a driver for the Xilinx LogiCORE DisplayPort IP core, which is a
pure DP transmitter core for Xiling FPGA (no display capabilities).

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 28421c7..0f41a23 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -30,6 +30,7 @@
 obj-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o
 obj-$(CONFIG_LD9040) += ld9040.o
 obj-$(CONFIG_LG4573) += lg4573.o
+obj-$(CONFIG_LOGICORE_DP_TX) += logicore_dp_tx.o
 obj-$(CONFIG_PXA_LCD) += pxa_lcd.o
 obj-$(CONFIG_S6E8AX0) += s6e8ax0.o
 obj-$(CONFIG_SCF0403_LCD) += scf0403_lcd.o