[PATCH] USB EHCI: fix gfp_t sparse warning

Fix sparse warning:
drivers/usb/host/ehci-hcd.c:719:35: warning: incorrect type in argument 3 (different base types)
drivers/usb/host/ehci-hcd.c:719:35:    expected unsigned int [unsigned] mem_flags
drivers/usb/host/ehci-hcd.c:719:35:    got restricted unsigned int [usertype] mem_flags

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>