newport_con: vc_color is now in state

Since commit 28bc24fc (vc: separate state), vc->vc_color is known as
vc->state.color. Somehow both me and 0-day bot missed this driver during
the conversion.

So fix the driver now.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 28bc24fc ("vc: separate state")
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Link: https://lore.kernel.org/r/20200724062735.18229-1-jslaby@suse.cz


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>