realtek_mst_i2c_spi.c: Introduce MCU reset param

Modify the spi master as to not automatically reset the
MCU on tear-down unless explicitly stated by a param.

Change-Id: Ib70bf7399e7541f30b6905cdb950a6fb7b74ae18
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/45674
Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed