ARM: dts: aspeed: Modify GPIO table for Asrock X570D4U BMC

Restructure GPIO table to fit maximum line length.

Fix mistakes found while working on OpenBMC userland configuration and
based on probing the board.

Schematic for this board is not available. Because of this the choice
was made to use a descriptive method for naming the GPIOs.

 - Push-pull outputs start with output-*
 - Open-drain outputs start with control-*
 - LED outputs start with led-*
 - Inputs start with input-*
 - Button inputs start with button-*
 - Active low signals end with *-n

Signed-off-by: Renze Nicolai <renze@rnplus.nl>
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>