drivers: i3c: mcux: fix issues when only i2c devices are on the bus

Fixes for bug:
https://github.com/zephyrproject-rtos/zephyr/issues/57560



* don't do CCC if no i3c devices in device tree
* don't wait for MCTRLDONE status when issuing stop
* don't do data part of transfer if buf_sz is 0
* don't limit transfers to only i2c devices in the device tree
  so "i2c scan" shell cmd works as expected

Signed-off-by: Mike J. Chen <mjchen@google.com>