The it8712 chip supports 16-bit fan tachometers in revisions >= 0x07.
Revisions >= 0x08 dropped support for 8-bit fan divisor registers. The
patch enables 16-bit fan readings on all revisions >= 0x07 just like
the it8716 and it8718 chips.
Signed-off-by: NAndrew Paprocki <andrew@ishiboo.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>