USB: xhci: Add correct email and files to MAINTAINERS entry.

Add the xHCI driver files to its MAINTAINERS entry so that I'm Cc'd on
cleanup patches.  Update the email address to one I actually use for
sending patches and responding to Linux mailing list emails.
Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

MAINTAINERS

@@ -5663,9 +5663,11 @@ S:	Maintained
 F:	drivers/net/wireless/rndis_wlan.c
 
 USB XHCI DRIVER
-M:	Sarah Sharp <sarah.a.sharp@intel.com>
+M:	Sarah Sharp <sarah.a.sharp@linux.intel.com>
 L:	linux-usb@vger.kernel.org
 S:	Supported
+F:	drivers/usb/host/xhci*
+F:	drivers/usb/host/pci-quirks*
 
 USB ZC0301 DRIVER
 M:	Luca Risolia <luca.risolia@studio.unibo.it>