[L] Change in coreboot[main]: superio/fintek: Add support for f81966d

[Harrie Paijmans (Code Review)]

Attention is currently required from: Erik van den Bogaert, Felix Singer, Frans Hendriks, Maxim Polyakov.

Harrie Paijmans has posted comments on this change by Harrie Paijmans. ( https://review.coreboot.org/c/coreboot/+/87198?usp=email )

Change subject: superio/fintek: Add support for f81966d
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Patch Set 4:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/87198/comment/f8fddc09_ed496ca4?usp... :
PS2, Line 16: TEST
> Please add information about this in the commit message TEST=.... […]

changed to verified with 'superiotool -de'

File src/superio/fintek/f81966d/f81966d_hwm.c:

https://review.coreboot.org/c/coreboot/+/87198/comment/e3439610_c3c6e9b6?usp... :
PS3, Line 27: pnp_enter_conf_mode(dev);
> There is no need to set the configuration mode for HWM, doesn't break initialization, it's just not  […]

Yes the indexed writes don't need unlocking. So can be safely removed.
Verified the change with 'superiotool -de' and writing non default 'hwm_amd_tsi_addr' functions as expected.