Fix whitespace damage: double space changed to a tab

At some point an intentional double space at the end of the sentence
got changed into a tab in the GPL header line:
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

This patch fixes the damage.

Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
diff --git a/include/mb862xx.h b/include/mb862xx.h
index 1af5670..164305f 100644
--- a/include/mb862xx.h
+++ b/include/mb862xx.h
@@ -12,7 +12,7 @@
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License