mb/google/guybrush: Disable EN_SPKR on init

We don't want to enable the speaker on init. It will be enabled while
using GPIO AMP codec in depthcharge.

BUG=b:223289882
TEST=boot guybrush and verify the devbeep and gpio value in kernel

Change-Id: Ic949cc95556913a2afef4a683a49eaa1e07e6147
Signed-off-by: Yu-Hsuan Hsu <yuhsuan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63145
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/mainboard/google/guybrush/variants/guybrush/gpio.c

@@ -35,7 +35,7 @@ static const struct soc_amd_gpio bid2_ramstage_gpio_table[] = {
 	/* EN_PWR_FP */
 	PAD_GPO(GPIO_32, LOW),
 	/* EN_SPKR */
-	PAD_GPO(GPIO_31, HIGH),
+	PAD_GPO(GPIO_31, LOW),
 	/* Unused TP27 */
 	PAD_NC(GPIO_70),
 };