soc/amd/common/blocks/lpc: Explicitly disable serial IRQ

The serirq enable bit defaults to true, so if we want it disabled, we
need to explicitly disable it.

BUG=b:180631748
TEST=Boot majolica and see spurious IRQ 9 gone.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I7f1e18f836f29cb75334dd88c91ad047f5bdfb10
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51077
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

0 files changed, 0 insertions, 0 deletions