.mailmap: Consolidate James' entries

Preferring his new (more detailed) name:

  $ git log --decorate --author james.o.hunt | grep -B1 Author
  commit e27acdd (origin/pr/922)
  Author: James O. D. Hunt <james.o.hunt@intel.com>
  --
  commit 30bc033 (origin/pr/539)
  Author: James Hunt <james.o.hunt@intel.com>

Signed-off-by: W. Trevor King <wking@tremily.us>

.mailmap

@@ -7,6 +7,7 @@ Brandon Philips <brandon@ifup.org> <brandon@ifup.co>
 ChengTiesheng <chengtiesheng@huawei.com>
 Daniel, Dao Quang Minh <dqminh89@gmail.com>
 Doug Davis <dug@us.ibm.com> <duglin@users.noreply.github.com>
+James O. D. Hunt <james.o.hunt@intel.com>
 John Howard <jhoward@microsoft.com> <John.Howard@microsoft.com>
 LinZhinan(Zen Lin) <linzhinan@huawei.com>
 Mrunal Patel <mrunalp@gmail.com> <mrunal@Mrunals-iMac.local>