HIL

UART: Move RX/TX pin assignment from constructor to builder functions #4228

Job	Run time
Build xtasks \| armv7	1m 39s
Build HIL Tests \| esp32c2	1m 26s
Build xtasks \| aarch64	1m 44s
Build HIL Tests \| esp32c3	1m 33s
Build HIL Tests \| esp32c6	1m 41s
Build HIL Tests \| esp32h2	1m 50s
Build HIL Tests \| esp32	3m 49s
Build HIL Tests \| esp32s2	4m 2s
Build HIL Tests \| esp32s3	4m 23s
Run HIL Tests \| ${{ matrix.target.soc }}	0s
	22m 7s

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