mb/google/nissa/var/rull: Adjust SSD power sequencing to give the SSD more preparation time

Improve SSD reset time by enabling earlier sequencing, save 230ms

BUG=b:397098950
TEST=build and boot normal using NVMe

Change-Id: I2e48a6614e8bded36d03138869b0eba7e1acb567
Signed-off-by: Rui Zhou <zhourui@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86483
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>

src/mainboard/google/brya/variants/rull/gpio.c

@@ -141,6 +141,8 @@ static const struct pad_config early_gpio_table[] = {
 };
 
 static const struct pad_config romstage_gpio_table[] = {
+	/* B4  : SSD_PERST_L */
+	PAD_CFG_GPO(GPP_B4, 1, DEEP),
 };
 
 const struct pad_config *variant_gpio_override_table(size_t *num)