arm64: dts: imx8mp: Add memory for USB3 glue layer to usb3 nodes

The USB3 glue layer has 2 areas in the register set, see RM Rev.1
section 11.2.5.2.1 GLUE_usb3 memory map:
* USB3 control/status
* PHY control/status

Provide the memory area to the usb3 nodes for accessing the features
in the USB3 control area.

Reviewed-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20220218152707.2198357-5-alexander.stein@ew.tq-group.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>