MAINTAINERS: update email address for Naoya Horiguchi

My email address has changed due to system upgrade, so please update it
in MAINTAINERS list.  My old address ([email protected]) will be
still active for a few months.

Note that my email system has some encoding issue and can't send patches
in raw format via git-send-email.  So patches from me will be delivered
via my free address ([email protected]) or GitHub.

Signed-off-by: Naoya Horiguchi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

Author: Naoya Horiguchi

MAINTAINERS

@@ -7829,7 +7829,7 @@ T:	git git://linuxtv.org/media_tree.git
 F:	drivers/media/platform/sti/hva
 
 HWPOISON MEMORY FAILURE HANDLING
-M:	Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
+M:	Naoya Horiguchi <naoya.[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	mm/hwpoison-inject.c