dt-bindings: arm: rockchip: Sort for boards not in correct order

The board entries should be sort in correct order by the description
string.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250107074911.550057-6-kever.yang@rock-chips.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>