MAINTAINERS: add Cadence USBHS driver entry

Patch adds entry for USBHS (CDNS2) driver into MAINTARNERS file

Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Message-ID: <20230602102644.77470-5-pawell@cadence.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>