MIPS: BMIPS: add BCM6318 power domain definitions

BCM6318 SoCs have a power domain controller to enable/disable certain
components in order to save power.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <F.fainelli@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

include/dt-bindings/soc/bcm6318-pm.h

+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_BMIPS_BCM6318_PM_H
+#define __DT_BINDINGS_BMIPS_BCM6318_PM_H
+
+#define BCM6318_POWER_DOMAIN_PCIE	0
+#define BCM6318_POWER_DOMAIN_USB	1
+#define BCM6318_POWER_DOMAIN_EPHY0	2
+#define BCM6318_POWER_DOMAIN_EPHY1	3
+#define BCM6318_POWER_DOMAIN_EPHY2	4
+#define BCM6318_POWER_DOMAIN_EPHY3	5
+#define BCM6318_POWER_DOMAIN_LDO2P5	6
+#define BCM6318_POWER_DOMAIN_LDO2P9	7
+#define BCM6318_POWER_DOMAIN_SW1P0	8
+#define BCM6318_POWER_DOMAIN_PAD	9
+
+#endif /* __DT_BINDINGS_BMIPS_BCM6318_PM_H */