dt-bindings: tpm: Drop type from "resets"

"resets" is a standard property which already has a type. Users only need
to define how many clocks and what each clock is if more than 1 clock.

Reviewed-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/20240124190714.1553772-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>