soc/amd/*: Enable ACPIMMIO decode first in fch_pre_init

Since the GPIO mux/control MMIO regions are within the ACPIMMIO region,
we need to call enable_acpimmio_decode_pm04 here first so that accessing
the GPIO registers will work.

BUG=None
TEST=Build and boot to OS in Guybrush.

Change-Id: I4bc076261c72cf999a5f2464b74cff6bf694d473
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57782
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/soc/amd/picasso/early_fch.c

@@ -42,13 +42,15 @@ static void reset_i2c_peripherals(void)
 /* Before console init */
 void fch_pre_init(void)
 {
+	/* Enable_acpimmio_decode_pm04 to enable the ACPIMMIO decode which is needed to access
+	   the GPIO registers. */
+	enable_acpimmio_decode_pm04();
 	lpc_early_init();
 
 	if (!CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI))
 		lpc_configure_decodes();
 
 	fch_spi_early_init();
-	enable_acpimmio_decode_pm04();
 	fch_smbus_init();
 	fch_enable_cf9_io();
 	fch_enable_legacy_io();