drm: renesas: shmobile: Rename shmob_drm_plane.plane

Rename the "plane" member of the shmob_drm_plane subclass structure to
"base", to improve readability.
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/73809d0a94f9075dd868cf567790d10f8ae61603.1694767209.git.geert+renesas@glider.be

drivers/gpu/drm/renesas/shmobile/shmob_drm_plane.c

@@ -20,7 +20,7 @@
 #include "shmob_drm_regs.h"
 
 struct shmob_drm_plane {
-	struct drm_plane plane;
+	struct drm_plane base;
 	unsigned int index;
 	unsigned int alpha;
 
@@ -37,7 +37,7 @@ struct shmob_drm_plane {
 
 static inline struct shmob_drm_plane *to_shmob_plane(struct drm_plane *plane)
 {
-	return container_of(plane, struct shmob_drm_plane, plane);
+	return container_of(plane, struct shmob_drm_plane, base);
 }
 
 static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane,
@@ -64,7 +64,7 @@ static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane,
 static void __shmob_drm_plane_setup(struct shmob_drm_plane *splane,
 				    struct drm_framebuffer *fb)
 {
-	struct shmob_drm_device *sdev = to_shmob_device(splane->plane.dev);
+	struct shmob_drm_device *sdev = to_shmob_device(splane->base.dev);
 	u32 format;
 
 	/* TODO: Support ROP3 mode */
@@ -216,7 +216,7 @@ struct drm_plane *shmob_drm_plane_create(struct shmob_drm_device *sdev,
 		funcs = &shmob_drm_overlay_plane_funcs;
 
 	splane = drmm_universal_plane_alloc(&sdev->ddev,
-					    struct shmob_drm_plane, plane, 1,
+					    struct shmob_drm_plane, base, 1,
 					    funcs, formats,
 					    ARRAY_SIZE(formats),  NULL, type,
 					    NULL);
@@ -226,5 +226,5 @@ struct drm_plane *shmob_drm_plane_create(struct shmob_drm_device *sdev,
 	splane->index = index;
 	splane->alpha = 255;
 
-	return &splane->plane;
+	return &splane->base;
 }