snd_hda: Rename LENOVO_I* to LENOVO_IDEAPAD*

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D45105

(cherry picked from commit 278953360e0e6187c3f7c688cb49254df1567f0b)
(cherry picked from commit 7814ed2bd321dff2bbec8408c5b64cb7f4f2dfc5)

Approved by: re (cperciva)