mb/google/rex/var/ovis: Update PWM_BUZZER GPIO config

BUG=b:271491845
TEST=Build and boot google/ovis on Rex P1 with buzzer added on GPP_B08

Change-Id: I44718ea15c93a075b6468f335a869a2cfa585273
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76049
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>

src/mainboard/google/rex/variants/ovis/gpio.c

@@ -69,7 +69,7 @@ static const struct pad_config gpio_table[] = {
 	/* GPP_B07 : [] ==> RST_HP_L */
 	PAD_CFG_GPO(GPP_B07, 1, DEEP),
 	/* GPP_B08 : [] ==> PWM_BUZZER */
-	PAD_CFG_NF(GPP_B08, NONE, DEEP, NF2),
+	PAD_CFG_GPO(GPP_B08, 0, DEEP),
 	/* GPP_B09 : [] ==> GPP_B09 */
 	PAD_NC(GPP_B09, NONE),
 	/* GPP_B10 : [] ==> WIFI_DISABLE_L */