dt-bindings: soc: fsl,qman-fqd: Fix reserved-memory.yaml reference

The reserved-memory.yaml reference needs the full path. No warnings were
generated because the example has the wrong compatible string, so fix
that too.

Fixes: 304a90c4 ("dt-bindings: soc: fsl: Convert q(b)man-* to yaml format")
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250507154231.1590634-1-robh@kernel.org


Signed-off-by: Rob Herring (Arm) <robh@kernel.org>