soc/intel/broadwell: Drop old forked version of SMBUS support

Switch to use the more recent version in sb/intel/common.

Change-Id: Icbd54b5671ea2a94aea5db4642698ef679540625
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38142
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/intel/broadwell/smbus.c

@@ -24,6 +24,7 @@
 #include <soc/iomap.h>
 #include <soc/ramstage.h>
 #include <soc/smbus.h>
+#include <southbridge/intel/common/smbus.h>
 
 static void pch_smbus_init(struct device *dev)
 {