mb/google/cherry: Initialize pmif/spmi/pmic in romstage

Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Change-Id: I2eeddb44b5495d05602c995a6103a56b09cf126a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52849
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

src/mainboard/google/cherry/Makefile.inc

@@ -7,6 +7,7 @@ verstage-y += reset.c
 
 romstage-y += memlayout.ld
 romstage-y += chromeos.c
+romstage-y += romstage.c
 
 ramstage-y += memlayout.ld
 ramstage-y += chromeos.c

src/mainboard/google/cherry/romstage.c

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <arch/stages.h>
+#include <soc/mt6315.h>
+#include <soc/mt6359p.h>
+#include <soc/pmif.h>
+
+void platform_romstage_main(void)
+{
+	mtk_pmif_init();
+	mt6359p_init();
+	mt6315_init();
+}