dt-bindings: soc/fsl: Update reserved memory binding for QBMan

Updates the QMan and BMan device tree bindings for reserved memory
nodes. This makes the reserved memory allocation compatible with
the shared-dma-pool usage.

Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Li Yang <leoyang.li@nxp.com>