drm/panic: Rename logo to logo_ascii

Rename variables related to the ASCII logo, to prepare for the advent of
support for graphical logos.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Jocelyn Falempe <[e-mail]>
Signed-off-by: Jocelyn Falempe <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/df773[e-mail]

drivers/gpu/drm/drm_panic.c

···
 	PANIC_LINE("Please reboot your computer."),
 };
 
-static const struct drm_panic_line logo[] = {
+static const struct drm_panic_line logo_ascii[] = {
 	PANIC_LINE("     .--.        _"),
 	PANIC_LINE("    |o_o |      | |"),
 	PANIC_LINE("    |:_/ |      | |"),
···
 static void draw_panic_static_user(struct drm_scanout_buffer *sb)
 {
 	size_t msg_lines = ARRAY_SIZE(panic_msg);
-	size_t logo_lines = ARRAY_SIZE(logo);
+	size_t logo_ascii_lines = ARRAY_SIZE(logo_ascii);
 	u32 fg_color = convert_from_xrgb8888(CONFIG_DRM_PANIC_FOREGROUND_COLOR, sb->format->format);
 	u32 bg_color = convert_from_xrgb8888(CONFIG_DRM_PANIC_BACKGROUND_COLOR, sb->format->format);
 	const struct font_desc *font = get_default_font(sb->width, sb->height, NULL, NULL);
···
 	r_screen = DRM_RECT_INIT(0, 0, sb->width, sb->height);
 
 	r_logo = DRM_RECT_INIT(0, 0,
-			       get_max_line_len(logo, logo_lines) * font->width,
-			       logo_lines * font->height);
+			       get_max_line_len(logo_ascii, logo_ascii_lines) * font->width,
+			       logo_ascii_lines * font->height);
 	r_msg = DRM_RECT_INIT(0, 0,
 			      min(get_max_line_len(panic_msg, msg_lines) * font->width, sb->width),
 			      min(msg_lines * font->height, sb->height));
···
 
 	if ((r_msg.x1 >= drm_rect_width(&r_logo) || r_msg.y1 >= drm_rect_height(&r_logo)) &&
 	    drm_rect_width(&r_logo) <= sb->width && drm_rect_height(&r_logo) <= sb->height) {
-		draw_txt_rectangle(sb, font, logo, logo_lines, false, &r_logo, fg_color);
+		draw_txt_rectangle(sb, font, logo_ascii, logo_ascii_lines, false, &r_logo,
+				   fg_color);
 	}
 	draw_txt_rectangle(sb, font, panic_msg, msg_lines, true, &r_msg, fg_color);
 }