dt-bindings: power: add RK3228 SoCs header for power-domain

According to a description from TRM, add all the power domains.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

include/dt-bindings/power/rk3228-power.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_BINDINGS_POWER_RK3228_POWER_H__
+#define __DT_BINDINGS_POWER_RK3228_POWER_H__
+
+/**
+ * RK3228 idle id Summary.
+ */
+
+#define RK3228_PD_CORE		0
+#define RK3228_PD_MSCH		1
+#define RK3228_PD_BUS		2
+#define RK3228_PD_SYS		3
+#define RK3228_PD_VIO		4
+#define RK3228_PD_VOP		5
+#define RK3228_PD_VPU		6
+#define RK3228_PD_RKVDEC	7
+#define RK3228_PD_GPU		8
+#define RK3228_PD_PERI		9
+#define RK3228_PD_GMAC		10
+
+#endif