[dv] Adjust chip_sw_uart_tx_rx_bootstrap max sim time
[dv] Adjust chip_sw_uart_tx_rx_bootstrap max sim time

It can go longer than 60 ms, so adjust to 80 ms.

Signed-off-by: Alexander Williams <d0fb8a15e7b6f5e62278a4cf44515038c232186c@google.com>

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