video: move zynqmp files to subdirectory

Place zynqmp files and headers in custom driver subdirectory.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/9aae6d217f0673c310818e3de38bb239c79c060c.1684312924.git.michal.simek@amd.com
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 1e2f4e6..4976295 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -740,14 +740,7 @@
 	  Enable support for the Syncoam PM-OLED display driver (RGB 160x128).
 	  Currently driver is supporting only SPI interface.
 
-config VIDEO_ZYNQMP_DPSUB
-	bool "Enable video support for ZynqMP Display Port"
-	depends on ZYNQMP_POWER_DOMAIN
-	help
-	  Enable support for Xilinx ZynqMP Display Port. Currently this file
-	  is used as placeholder for driver. The main reason is to record
-	  compatible string and calling power domain driver.
-
+source "drivers/video/zynqmp/Kconfig"
 source "drivers/video/nexell/Kconfig"
 
 config CONSOLE_SCROLL_LINES