realtek_mst_i2c_spi: Use `i2c_open_from_programmer_params`

This allows using `buspath` to specify which I2C device to use.

Change-Id: Ibdf07a9fde0ddfcda1c0bfa35a3e7cde5c22cedb
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/52831
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Peter Marheine <pmarheine@chromium.org>
1 file changed