Added 7.1 support for MSI GX620 and jack quirk.

Reference: kernel bug#13430
	http://bugzilla.kernel.org/show_bug.cgi?id=13430Signed-off-by: NDavid Heidelberger <d.okias@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>