dt-bindings: power: Add r8a77961 SYSC power domain definitions

Add power domain indices for the R-Car M3-W+ (R8A77961) SoC.

Based on Rev. 2.00 of the R-Car Series, 3rd Generation, Hardware User’s
Manual (Jul. 31, 2019).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Link: https://lore.kernel.org/r/20191023122911.12166-6-geert+renesas@glider.be

include/dt-bindings/power/r8a77961-sysc.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Glider bvba
+ */
+#ifndef __DT_BINDINGS_POWER_R8A77961_SYSC_H__
+#define __DT_BINDINGS_POWER_R8A77961_SYSC_H__
+
+/*
+ * These power domain indices match the numbers of the interrupt bits
+ * representing the power areas in the various Interrupt Registers
+ * (e.g. SYSCISR, Interrupt Status Register)
+ */
+
+#define R8A77961_PD_CA57_CPU0		 0
+#define R8A77961_PD_CA57_CPU1		 1
+#define R8A77961_PD_CA53_CPU0		 5
+#define R8A77961_PD_CA53_CPU1		 6
+#define R8A77961_PD_CA53_CPU2		 7
+#define R8A77961_PD_CA53_CPU3		 8
+#define R8A77961_PD_CA57_SCU		12
+#define R8A77961_PD_CR7			13
+#define R8A77961_PD_A3VC		14
+#define R8A77961_PD_3DG_A		17
+#define R8A77961_PD_3DG_B		18
+#define R8A77961_PD_CA53_SCU		21
+#define R8A77961_PD_A3IR		24
+#define R8A77961_PD_A2VC1		26
+
+/* Always-on power area */
+#define R8A77961_PD_ALWAYS_ON		32
+
+#endif /* __DT_BINDINGS_POWER_R8A77961_SYSC_H__ */