drm/mediatek: Rename "mtk_drm_plane" to "mtk_plane"

Rename all "mtk_drm_plane" to "mtk_plane":
- To align the naming rule
- To reduce the code size

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.corp-partner.google.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240322091232.26387-4-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Author: Hsiao Chien Sung

drivers/gpu/drm/mediatek/mtk_drm_plane.c

@@ -93,8 +93,8 @@ static bool mtk_plane_format_mod_supported(struct drm_plane *plane,
 	return true;
 }
 
-static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
-					struct drm_plane_state *state)
+static void mtk_plane_destroy_state(struct drm_plane *plane,
+				    struct drm_plane_state *state)
 {
 	__drm_atomic_helper_plane_destroy_state(state);
 	kfree(to_mtk_plane_state(state));
@@ -241,7 +241,7 @@ static const struct drm_plane_funcs mtk_plane_funcs = {
 	.destroy = drm_plane_cleanup,
 	.reset = mtk_plane_reset,
 	.atomic_duplicate_state = mtk_plane_duplicate_state,
-	.atomic_destroy_state = mtk_drm_plane_destroy_state,
+	.atomic_destroy_state = mtk_plane_destroy_state,
 	.format_mod_supported = mtk_plane_format_mod_supported,
 };
 

drivers/gpu/drm/mediatek/mtk_drm_plane.h

@@ -4,8 +4,8 @@
  * Author: CK Hu <ck.hu@mediatek.com>
  */
 
-#ifndef _MTK_DRM_PLANE_H_
-#define _MTK_DRM_PLANE_H_
+#ifndef _MTK_PLANE_H_
+#define _MTK_PLANE_H_
 
 #include <drm/drm_crtc.h>
 #include <linux/types.h>