mailmap: change primary address for Linus Arver

Linus will lose access to his work email soon.

Signed-off-by: Linus Arver <linusa@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: Linus Arver

.mailmap

@@ -152,6 +152,7 @@ Lars Doelle <lars.doelle@on-line ! de>
 Lars Doelle <lars.doelle@on-line.de>
 Lars Noschinski <lars@public.noschinski.de> <lars.noschinski@rwth-aachen.de>
 Li Hong <leehong@pku.edu.cn>
+Linus Arver <linus@ucla.edu> <linusa@google.com>
 Linus Torvalds <torvalds@linux-foundation.org> <torvalds@evo.osdl.org>
 Linus Torvalds <torvalds@linux-foundation.org> <torvalds@g5.osdl.org>
 Linus Torvalds <torvalds@linux-foundation.org> <torvalds@osdl.org>