bus: fsl-mc: add autorescan sysfs

Add the autorescan sysfs in order to enable/disable the DPRC IRQs on
which automatic rescan of the bus is performed. This is important when
dynamic creation of objects is needed to happen in a timely manner because
object creation can be bundled together.

Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/20210114170752.2927915-6-ciorneiioana@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>