USB: EHCI: ehci-mv: add MODULE_DEVICE_TABLE

This fixes autoloading the module by the OF compatible string.

Fixes: 813e18b1 ("USB: EHCI: ehci-mv: add DT support")
Cc: stable@vger.kernel.org
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>