drivers: net: fsl-mc: do not prefix decimal values with 0x

The fsl-mc driver printed debug information which used the 0x prefix for
decimal values. This only confuses anyone looking through the log.
Because of this, just remove the prefix and use the "DPXY.<id>" notation
which is the standard one for the DPAA2 objects.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>