driver: net: fsl-mc: Remove portal id hard-coding

Management Complex firmware 9.0 has fixed the issue of
dprc_destroy_container i.e. the used portal is not return to the
free pool. Which was resulting in error ethernet driver want to
use this portal via either DPL or dynamically in Linux.

Hard-coding of portal id is removed.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <york.sun@nxp.com>