dt-bindings: power: Add A523 PPU and PCK600 power controllers

The A523 PPU is likely the same kind of hardware seen on previous SoCs.

The A523 PCK600, as the name suggests, is likely a customized version
of ARM's PCK-600 power controller. Comparing the BSP driver against
ARM's PPU datasheet shows that the basic registers line up, but
Allwinner's hardware has some additional delay controls in the reserved
register range. As such it is likely not fully compatible with the
standard ARM version.

Document A523 PPU and PCK600 compatibles.

Also reorder the compatible string entries so they are grouped and
ordered by family first, then by SoC model.

Reviewed-by: Andre Przywara <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Signed-off-by: Chen-Yu Tsai <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

Documentation/devicetree/bindings/power/allwinner,sun20i-d1-ppu.yaml

···
 properties:
   compatible:
     enum:
-      - allwinner,sun20i-d1-ppu
       - allwinner,sun8i-v853-ppu
+      - allwinner,sun20i-d1-ppu
+      - allwinner,sun55i-a523-pck-600
+      - allwinner,sun55i-a523-ppu
 
   reg:
     maxItems: 1

include/dt-bindings/power/allwinner,sun55i-a523-pck-600.h

···
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+
+#ifndef _DT_BINDINGS_POWER_SUN55I_A523_PCK600_H_
+#define _DT_BINDINGS_POWER_SUN55I_A523_PCK600_H_
+
+#define PD_VE			0
+#define PD_GPU			1
+#define PD_VI			2
+#define PD_VO0			3
+#define PD_VO1			4
+#define PD_DE			5
+#define PD_NAND			6
+#define PD_PCIE			7
+
+#endif /* _DT_BINDINGS_POWER_SUN55I_A523_PCK600_H_ */

include/dt-bindings/power/allwinner,sun55i-a523-ppu.h

···
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+
+#ifndef _DT_BINDINGS_POWER_SUN55I_A523_PPU_H_
+#define _DT_BINDINGS_POWER_SUN55I_A523_PPU_H_
+
+#define PD_DSP			0
+#define PD_NPU			1
+#define PD_AUDIO		2
+#define PD_SRAM			3
+#define PD_RISCV		4
+
+#endif /* _DT_BINDINGS_POWER_SUN55I_A523_PPU_H_ */