arm64: dts: ti: Add k3-am62-pocketbeagle2

arm64: dts: ti: Add k3-am62-pocketbeagle2

BeagleBoard.org PocketBeagle 2 is an upgraded version of the popular
PocketBeagle. It is based on Texas Instruments AM6232 or AM6254 SoC.
Its dual or quad A53 cores can provide higher performance than classic
PocketBeagle. The new design comes with pre-soldered headers, a
3-pin JST-SH 1.00mm UART debug port, a USB-C port, Texas Instruments
MSPM0L1105 Cortex-M0+ MCU for ADC, 512MB RAM, and a LiPo Battery
charger.

MSPM0L1105 firmware source:
https://openbeagle.org/pocketbeagle/mspm0-adc-eeprom
* EEPROM 24c32 emulation
* ADC ad7291 emulation

https://www.beagleboard.org/boards/pocketbeagle-2
https://openbeagle.org/pocketbeagle/pocketbeagle-2

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Tested-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Link: https://lore.kernel.org/r/20250415225940.3899486-2-robertcnelson@gmail.com
Signed-off-by: Nishanth Menon <nm@ti.com>