drm/rp1-dsi: Run DRM default client setup

Call drm_client_setup() to run the kernel's default client setup
for DRM. Set fbdev_probe in struct drm_driver, so that the client
setup can start the common fbdev client.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Author: 6by9

drivers/gpu/drm/rp1/rp1-dsi/Kconfig

@@ -2,6 +2,7 @@
 config DRM_RP1_DSI
 	tristate "DRM Support for RP1 DSI"
 	depends on DRM && MFD_RP1
+	select DRM_CLIENT_SELECTION
 	select DRM_GEM_DMA_HELPER
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI

drivers/gpu/drm/rp1/rp1-dsi/rp1_dsi.c

@@ -27,6 +27,7 @@
 #include <drm/drm_encoder.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev_dma.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_atomic_helper.h>
@@ -264,6 +265,7 @@ static struct drm_driver rp1dsi_driver = {
 	.major			= 1,
 	.minor			= 0,
 	DRM_GEM_DMA_DRIVER_OPS,
+	DRM_FBDEV_DMA_DRIVER_OPS,
 	.release		= rp1dsi_stopall,
 };