Update qbman driver
 - As per latest available qbman driver
 - Use of atomic APIs

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
CC: Geoff Thorpe <Geoff.Thorpe@freescale.com>
CC: Haiying Wang <Haiying.Wang@freescale.com>
CC: Roy Pledge <Roy.Pledge@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>