chip/mt8192_scp: fix unknown type errors
Fixes unknown type errors such as:
chip/mt8192_scp/ipi_chip.h:40:2: error: unknown type name 'uint32_t'
uint32_t signaled;
BRANCH=none
TEST=make BOARD=asurada_scp
#ifndef __CROS_EC_IPI_CHIP_H
#define __CROS_EC_IPI_CHIP_H
+#include "common.h"
+
/*
* Length of EC version string is at most 32 byte (NULL included), which
* also aligns SCP fw_version length.
