fbcon: correct CONFIG_FB_TILEBLITTING macro name in #endif comment

A comment in drivers/video/fbdev/core/fbcon.c incorrectly refers to
CONFIG_MISC_TILEBLITTING instead of CONFIG_FB_TILEBLITTING. Correct it.

Discovered while searching for CONFIG_* symbols referenced in code but
not defined in any Kconfig file.

Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/fbdev/core/fbcon.c

@@ -768,7 +768,7 @@ static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
 	return 0;
 }
 
-#endif /* CONFIG_MISC_TILEBLITTING */
+#endif /* CONFIG_FB_TILEBLITTING */
 
 static void fbcon_release(struct fb_info *info)
 {