dt-bindings: nvmem: Document support for Airoha AN8855 Switch EFUSE

Document support for Airoha AN8855 Switch EFUSE used to calibrate
internal PHYs and store additional configuration info.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://lore.kernel.org/r/20250912131415.303407-5-srini@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>