sb/intel/common: Add smbus_set_slave_addr()

Change-Id: I7dddb61fab00e0f4f67d4eebee0cfe8dcd99f4ab
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38230
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/device/smbus_host.h

@@ -35,6 +35,6 @@ int do_i2c_block_write(uintptr_t base, u8 device, size_t bytes, u8 *buf);
 /* Upstream API */
 
 void smbus_host_reset(uintptr_t base);
-
+void smbus_set_slave_addr(uintptr_t base, u8 slave_address);
 
 #endif