mailmap: Add Martin due to one commit with incomplete name

Johan Hedberg · Johan Hedberg · commit 9e52c81f0ae0 · 2013-07-20T23:33:02.000+03:00
diff --git a/.mailmap b/.mailmap
@@ -7,3 +7,4 @@ Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>	<Waldemar.Rymarkiewicz@t
 Alok Barsode <alokbarsode@gmail.com>			<alok@greatbear.(none)>
 André Dieb Martins <andre.dieb@signove.com>		<andre.dieb@signove.com>
 Tedd Ho-Jeong An <tedd.an@intel.com>			<tedd.an@intel.com>
+Martin Xu <martin.xu@linux.intel.com>			<martin.xu@linux.intel.com>

-Original file line number
+Diff line change
 Alok Barsode <[email protected]>			<alok@greatbear.(none)>
 André Dieb Martins <[email protected]>		<[email protected]>
 Tedd Ho-Jeong An <[email protected]>			<[email protected]>
 +Martin Xu <[email protected]>			<[email protected]>