drm/bridge: Fix Kconfig indentation

Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
	$ sed -e 's/^        /\t/' -i */Kconfig
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191120133634.11601-1-krzk@kernel.org

drivers/gpu/drm/bridge/Kconfig

@@ -50,10 +50,10 @@ config DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW
 	select DRM_KMS_HELPER
 	select DRM_PANEL
 	---help---
-          This is a driver for the display bridges of
-          GE B850v3 that convert dual channel LVDS
-          to DP++. This is used with the i.MX6 imx-ldb
-          driver. You are likely to say N here.
+	  This is a driver for the display bridges of
+	  GE B850v3 that convert dual channel LVDS
+	  to DP++. This is used with the i.MX6 imx-ldb
+	  driver. You are likely to say N here.
 
 config DRM_NXP_PTN3460
 	tristate "NXP PTN3460 DP/LVDS bridge"