driver: net: fsl-mc: Update print to reflect correct string

Update printf with dpbp_exit to match with previous function call.

Signed-off-by: Itai Katz <itai.katz@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>