USB: change maintainership of ohci-hcd and ehci-hcd

Following the loss of David Brownell, I volunteer to maintain the
ohci-hcd and ehci-hcd drivers.  This patch (as1472) makes it official.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index e50fc6e..4307673 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6430,8 +6430,9 @@
 F:	drivers/usb/misc/rio500*
 
 USB EHCI DRIVER
+M:	Alan Stern <stern@rowland.harvard.edu>
 L:	linux-usb@vger.kernel.org
-S:	Orphan
+S:	Maintained
 F:	Documentation/usb/ehci.txt
 F:	drivers/usb/host/ehci*
 
@@ -6490,8 +6491,9 @@
 F:	sound/usb/midi.*
 
 USB OHCI DRIVER
+M:	Alan Stern <stern@rowland.harvard.edu>
 L:	linux-usb@vger.kernel.org
-S:	Orphan
+S:	Maintained
 F:	Documentation/usb/ohci.txt
 F:	drivers/usb/host/ohci*