maintainers: linux-omap list is subscribers only

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Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -3709,7 +3709,7 @@ S:      Maintained
 
 TI OMAP MMC INTERFACE DRIVER
 P:	Carlos Aguiar, Anderson Briglia and Syed Khasim
-M:	linux-omap-open-source@linux.omap.com 
+M:	linux-omap-open-source@linux.omap.com (subscribers only)
 W:	http://linux.omap.com
 W:	http://www.muru.com/linux/omap/
 S:	Maintained