drm: shmobile: Use %p4cc to print fourcc codes

Replace the printing of hexadecimal fourcc format codes by
pretty-printed format names, using the "%p4cc" format specifier.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1a63e5afc8a85f7ae10f7f4395c2d065ba1aeb59.1684854992.git.geert+renesas@glider.be

drivers/gpu/drm/shmobile/shmob_drm_crtc.c

@@ -355,8 +355,8 @@ static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc,
 
 	format = shmob_drm_format_info(crtc->primary->fb->format->format);
 	if (format == NULL) {
-		dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
-			crtc->primary->fb->format->format);
+		dev_dbg(sdev->dev, "mode_set: unsupported format %p4cc\n",
+			&crtc->primary->fb->format->format);
 		return -EINVAL;
 	}
 

drivers/gpu/drm/shmobile/shmob_drm_kms.c

@@ -96,8 +96,8 @@ shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 
 	format = shmob_drm_format_info(mode_cmd->pixel_format);
 	if (format == NULL) {
-		dev_dbg(dev->dev, "unsupported pixel format %08x\n",
-			mode_cmd->pixel_format);
+		dev_dbg(dev->dev, "unsupported pixel format %p4cc\n",
+			&mode_cmd->pixel_format);
 		return ERR_PTR(-EINVAL);
 	}