drm: kirin: Remove HISI_KIRIN_DW_DSI config option

The CONFIG_HISI_KIRIN_DW_DSI option is only used w/ kirin
driver, so cut out the middleman and condense the config
logic down.

Cc: Rongrong Zou <zourongrong@gmail.com>
Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Xinliang Liu <z.liuxinliang@hisilicon.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190820230626.23253-3-john.stultz@linaro.org

drivers/gpu/drm/hisilicon/kirin/Kconfig

@@ -5,16 +5,8 @@ config DRM_HISI_KIRIN
 	select DRM_KMS_HELPER
 	select DRM_GEM_CMA_HELPER
 	select DRM_KMS_CMA_HELPER
-	select HISI_KIRIN_DW_DSI
+	select DRM_MIPI_DSI
 	help
 	  Choose this option if you have a hisilicon Kirin chipsets(hi6220).
 	  If M is selected the module will be called kirin-drm.
 
-config HISI_KIRIN_DW_DSI
-	tristate "HiSilicon Kirin specific extensions for Synopsys DW MIPI DSI"
-	depends on DRM_HISI_KIRIN
-	select DRM_MIPI_DSI
-	help
-	 This selects support for HiSilicon Kirin SoC specific extensions for
-	 the Synopsys DesignWare DSI driver. If you want to enable MIPI DSI on
-	 hi6220 based SoC, you should selet this option.

drivers/gpu/drm/hisilicon/kirin/Makefile

@@ -2,6 +2,5 @@
 kirin-drm-y := kirin_drm_drv.o \
 	       kirin_drm_ade.o
 
-obj-$(CONFIG_DRM_HISI_KIRIN) += kirin-drm.o
+obj-$(CONFIG_DRM_HISI_KIRIN) += kirin-drm.o dw_drm_dsi.o
 
-obj-$(CONFIG_HISI_KIRIN_DW_DSI) += dw_drm_dsi.o