checkpatch.pl: Make common.h check boarder

At this point in time we should not add common.h to any new files, so
make checkpatch.pl complain.

Signed-off-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/test_checkpatch.py b/tools/patman/test_checkpatch.py
index a8bb364..f811746 100644
--- a/tools/patman/test_checkpatch.py
+++ b/tools/patman/test_checkpatch.py
@@ -238,7 +238,7 @@
 + * passed to kernel in the ATAGs
 + */
 +
-+#include <common.h>
++#include <config.h>
 +
 +struct bootstage_record {
 +	u32 time_us;
@@ -401,10 +401,15 @@
     def test_barred_include_in_hdr(self):
         """Test for using a barred include in a header file"""
         pm = PatchMaker()
-        #pm.add_line('include/myfile.h', '#include <common.h>')
         pm.add_line('include/myfile.h', '#include <dm.h>')
         self.check_single_message(pm, 'BARRED_INCLUDE_IN_HDR', 'error')
 
+    def test_barred_include_common_h(self):
+        """Test for adding common.h to a file"""
+        pm = PatchMaker()
+        pm.add_line('include/myfile.h', '#include <common.h>')
+        self.check_single_message(pm, 'BARRED_INCLUDE_COMMON_H', 'error')
+
     def test_config_is_enabled_config(self):
         """Test for accidental CONFIG_IS_ENABLED(CONFIG_*) calls"""
         pm = PatchMaker()