soc/amd/*: move reset_i2c_peripherals call after early GPIO setup

Since bootblock_soc_early_init gets called before
bootblock_mainboard_early_init which does the early GPIO setup, external
I2C level shifters that are controlled by GPIOs might not be enabled yet.
Moving the reset_i2c_peripherals call to bootblock_soc_init makes sure
that the early GPIO setup is already done when reset_i2c_peripherals is
called.

Haven't probed any SCL signal on the non-SoC side of the I2C level
shifters yet, but the waveform on the SCL pin of I2C3 on the SoC of a
barla/careena Chromebook doesn't have the longer than expected SCL
pulses any more.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: If02140aef56ed6db7ecee24811724b5b24e54a91
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57291
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/soc/amd/cezanne/early_fch.c

@@ -51,7 +51,6 @@ void fch_pre_init(void)
 	fch_enable_legacy_io();
 	fch_disable_legacy_dma_io();
 	enable_aoac_devices();
-	reset_i2c_peripherals();
 
 	/*
 	 * On reset Range_0 defaults to enabled. We want to start with a clean
@@ -70,6 +69,7 @@ void fch_pre_init(void)
 /* After console init */
 void fch_early_init(void)
 {
+	reset_i2c_peripherals();
 	pm_set_power_failure_state();
 	fch_print_pmxc0_status();
 	i2c_soc_early_init();