Add the 82801H variants 1071:8227 and 8086:2503 to use ALC883_MITAC

Reference: Ubuntu bug 210865
    https://bugs.launchpad.net/bugs/210865Signed-off-by: Luke Yelavich <themuso@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>