ppc: ktu1125 driver fixes
ppc: ktu1125 driver fixes

Fixed OVP limit, interrupts masks and enable bit

BRANCH=none
BUG=b:207891241
TEST=manually on modified Brya board

Signed-off-by: Boris Mittelberg <46897f4fb5cad4b1d5146ad1fd460d7f4825bbf7@google.com>
Change-Id: I63f4b8ca03e93edfd27a9ac635da2188c8bcc1f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3433636
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec