superio/smsc/lpc47b397: fix regression in ops override

b0d868e8fe introduced a regression

Change-Id: I231888f2702027a80f25eb418c4e4703e55db920
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35282
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marcello Sylvester Bauer <sylvblck@sylv.io>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/superio/smsc/lpc47b397/superio.c

@@ -139,7 +139,7 @@ static struct pnp_info pnp_dev_info[] = {
 	{ NULL, LPC47B397_SP2, PNP_IO0 | PNP_IRQ0, 0x07f8, },
 	{ NULL, LPC47B397_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1,
 		0x07ff, 0x07ff, },
-	{ NULL_hwm, LPC47B397_HWM,  PNP_IO0, 0x07f0, },
+	{ &ops_hwm, LPC47B397_HWM,  PNP_IO0, 0x07f0, },
 	{ NULL, LPC47B397_RT,  PNP_IO0, 0x0780, },
 };