IT8772F: Add switch to enable HWM(Hardware Monitor)

Setup External Temperature to read via thermal diode/resistor
into TMPINx register by setting thermal_mode switch.

BUG=none
TEST=Compiled, verified
Signed-off-by: Ted Kuo <[email protected]>

Change-Id: I0e8621b92faa5c6246e009d2f852c8d4db484034
Reviewed-on: https://chromium-review.googlesource.com/260545
Reviewed-by: Shawn N <[email protected]>
Commit-Queue: Ted Kuo <[email protected]>
Tested-by: Ted Kuo <[email protected]>
(cherry picked from commit 973e2d393f2595b756f8aa20f6fbe3b6e045621a)
Reviewed-on: https://chromium-review.googlesource.com/262340
3 files changed