mb/google/sarien: do early pad configuration in early bootstage

Do early pad configuration in early bootblock before console init, to
make the console work as early as possible. The board does not do any
other gpio configuration in bootblock, so this should not influence
behaviour in a negative way (e.g. breaking overrides).

Change-Id: I342b9217af0288a3b525e629aac791eb0f880442
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49420
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>

src/mainboard/google/sarien/bootblock.c

@@ -5,7 +5,7 @@
 #include <soc/gpio.h>
 #include <variant/gpio.h>
 
-static void early_config_gpio(void)
+void bootblock_mainboard_early_init(void)
 {
 	const struct pad_config *early_gpio_table;
 	size_t num_gpios = 0;
@@ -16,6 +16,5 @@ static void early_config_gpio(void)
 
 void bootblock_mainboard_init(void)
 {
-	early_config_gpio();
 	wilco_ec_early_init();
 }