[Cleanup] - Take in interrupt line as a parameter in the overlay

[jr1221]

Description

Right now, the newracom overlay file in the board/tpu directory has a hardcoded interrupt.

Acceptance Criteria

• can change interrupt without recompiling overlay

Proposed Solution

It should instead be a parameter like mcp2515-can0-spi4 so the config.txt can dynamically change the interupt pin. The default on config.txt should be that of TPU v1, but the other interrupt for stock ALFA hats should be noted in a comment.

[jr1221]

Also remove the one in the package directory and switch AP over to the other one with the correct interrupt ofc. Put the dts in a common folder.