arm64: dts: imx93-phyboard-nash: Add PEB-WLBT-07 overlay

Add overlay to support PHYTEC PEB-WLBT-07 WiFi/Bluetooth evaluation
adapter on phyBOARD-Nash-i.MX93 board. Adapter uses the u-blox MAYA-W2
module (IW612 chipset) which is capable of Wi-Fi 6 and Bluetooth 5.4 LE.

Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>