mb/google/myst: Update PCIE_RST_L drive

PCIE_RST_L is attached to a pull down, change the init to NC.

BUG=None
TEST=Boot to OS

Change-Id: I3f7a548a33eb18327139f033d7c0d6a1843f1639
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75700
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/myst/variants/baseboard/gpio.c

@@ -52,7 +52,7 @@ static const struct soc_amd_gpio base_gpio_table[] = {
 	PAD_NC(GPIO_24),
 	/* GPIO_25-26: Not available */
 	/* SOC_PCIE_RST1_R_L  */
-	PAD_NFO(GPIO_27, PCIE_RST1_L, HIGH),
+	PAD_NC(GPIO_27),
 	/* GPIO_28: Not available */
 	/* SD_AUX_RST */
 	PAD_GPO(GPIO_29, LOW),