MAINTAINERS: openbmc mailing list is moderated

The openbmc mailing list is moderated for non-subscribers.
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Acked-by: NBrendan Higgins <brendanhiggins@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Joel Stanley <joel@jms.id.au>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -1161,7 +1161,7 @@ M:	Brendan Higgins <brendanhiggins@google.com>
 R:	Benjamin Herrenschmidt <benh@kernel.crashing.org>
 R:	Joel Stanley <joel@jms.id.au>
 L:	linux-i2c@vger.kernel.org
-L:	openbmc@lists.ozlabs.org
+L:	openbmc@lists.ozlabs.org (moderated for non-subscribers)
 S:	Maintained
 F:	drivers/irqchip/irq-aspeed-i2c-ic.c
 F:	drivers/i2c/busses/i2c-aspeed.c