dt-bindings: timer: nxp,lpc3220-timer: Convert to dtschema

Convert the NXP LPC3220 timer bindings to yaml format.
Add missing resets property as it is already being used in dts.

Cc: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Animesh Agarwal <animeshagarwal28@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240731074544.208411-1-animeshagarwal28@gmail.com


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