i2c: Update the FSF address

Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/include/linux/i2c-mux.h b/include/linux/i2c-mux.h
index 34536ef..747f0cd 100644
--- a/include/linux/i2c-mux.h
+++ b/include/linux/i2c-mux.h
@@ -18,7 +18,8 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  */
 
 #ifndef _LINUX_I2C_MUX_H