dt-bindings: phy: Drop reset-gpios from marvell,mmp3-hsic-phy

This has been added in error -- the PHY block doesn't have a reset pin.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200925235828.228626-2-lkundrak@v3.sk


Signed-off-by: Vinod Koul <vkoul@kernel.org>