drm: renesas: Move RZ/G2L MIPI DSI driver to rz-du

All the RZ/G2L DU specific components are located under the rz-du folder,
so it makes sense to move the RZ/G2L MIPI DSI driver there instead of
keeping it in the rcar-du folder. This change improves the organization
and modularity of the driver configuration by grouping related settings together.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240625123244.200533-1-prabhakar.mahadev-lad.rj@bp.renesas.com

drivers/gpu/drm/renesas/rcar-du/Kconfig

@@ -60,14 +60,6 @@ config DRM_RCAR_MIPI_DSI
 	select DRM_MIPI_DSI
 	select RESET_CONTROLLER
 
-config DRM_RZG2L_MIPI_DSI
-	tristate "RZ/G2L MIPI DSI Encoder Support"
-	depends on DRM && DRM_BRIDGE && OF
-	depends on ARCH_RENESAS || COMPILE_TEST
-	select DRM_MIPI_DSI
-	help
-	  Enable support for the RZ/G2L Display Unit embedded MIPI DSI encoders.
-
 config DRM_RCAR_VSP
 	bool "R-Car DU VSP Compositor Support" if ARM
 	default y if ARM64

drivers/gpu/drm/renesas/rcar-du/Makefile

@@ -14,5 +14,3 @@ obj-$(CONFIG_DRM_RCAR_DU)		+= rcar-du-drm.o
 obj-$(CONFIG_DRM_RCAR_DW_HDMI)		+= rcar_dw_hdmi.o
 obj-$(CONFIG_DRM_RCAR_LVDS)		+= rcar_lvds.o
 obj-$(CONFIG_DRM_RCAR_MIPI_DSI)		+= rcar_mipi_dsi.o
-
-obj-$(CONFIG_DRM_RZG2L_MIPI_DSI)	+= rzg2l_mipi_dsi.o

drivers/gpu/drm/renesas/rz-du/Kconfig

@@ -10,3 +10,11 @@ config DRM_RZG2L_DU
 	help
 	  Choose this option if you have an RZ/G2L alike chipset.
 	  If M is selected the module will be called rzg2l-du-drm.
+
+config DRM_RZG2L_MIPI_DSI
+	tristate "RZ/G2L MIPI DSI Encoder Support"
+	depends on DRM && DRM_BRIDGE && OF
+	depends on ARCH_RENESAS || COMPILE_TEST
+	select DRM_MIPI_DSI
+	help
+	  Enable support for the RZ/G2L Display Unit embedded MIPI DSI encoders.

drivers/gpu/drm/renesas/rz-du/Makefile

@@ -6,3 +6,5 @@ rzg2l-du-drm-y := rzg2l_du_crtc.o \
 
 rzg2l-du-drm-$(CONFIG_VIDEO_RENESAS_VSP1)	+= rzg2l_du_vsp.o
 obj-$(CONFIG_DRM_RZG2L_DU)		+= rzg2l-du-drm.o
+
+obj-$(CONFIG_DRM_RZG2L_MIPI_DSI)	+= rzg2l_mipi_dsi.o