dt-bindings: power: Add power-domain header for JH7110

Add power-domain header for JH7110 SoC, it can use to operate dphy
power.
Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230913-grumbly-rewrite-34c85539f2ed@spudSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

include/dt-bindings/power/starfive,jh7110-pmu.h

 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
 /*
- * Copyright (C) 2022 StarFive Technology Co., Ltd.
+ * Copyright (C) 2022-2023 StarFive Technology Co., Ltd.
  * Author: Walker Chen <walker.chen@starfivetech.com>
  */
 #ifndef __DT_BINDINGS_POWER_JH7110_POWER_H__
@@ -14,4 +14,7 @@
 #define JH7110_PD_ISP		5
 #define JH7110_PD_VENC		6
 
+#define JH7110_PD_DPHY_TX	0
+#define JH7110_PD_DPHY_RX	1
+
 #endif