usb: ehci-sh: Fix build error due to comma has been deleted

By commit 39d35681 (USB: remove incorrect __exit markups), comma following
ehci_hcd_sh_remove has been deleted. This fixes the error by the correction.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>