K 10
svn:author
V 4
avos
K 8
svn:date
V 27
2016-01-20T23:55:39.085882Z
K 7
svn:log
V 301
urtwn: add temperature calibration

Redo LC calibration if temperature changed significantly since last
calibration.

Tested with RTL8188EU/RTL8188CUS in STA mode.

Reviewed by:	kevlo
Approved by:	adrian (mentor)
Obtained from:	NetBSD (mostly)
Differential Revision:	https://reviews.freebsd.org/D4966

END