[SRU] Add support for AMD-Xilinx Kria KD240

[Impact]

Add AMD-Xilinx Kria KD240 board support

[Where problems could occur]

The patch adds support for the AMD-Xilinx Kria KD240, but affects the boot script used by:

* ZCU 102, 104, 106, 111
* Kria KR revisions A, B, 1
* Kria KV revisions A, B, Z, 1

[Test Case]

* Enable proposed updates (https://wiki.ubuntu.com/Testing/EnableProposed)
* Update flash-kernel to the version in -proposed: sudo apt install -t jammy-proposed flash-kernel
* Run flash-kernel (if the upgrade didn't already): sudo flash-kernel
* Reboot: sudo reboot
* Ensure system boots successfully

[Regression Potential]

As the patch touches the u-boot script used by several boards (listed above), booting should be re-tested against the potentially affected boards under the proposed package.