dt-bindings: marvell,mmp2: Add ids for the power domains

On MMP2 the audio and GPU blocks are on separate power islands. On MMP3
the camera block's power is also controlled separately.

Add the numbers that we could use to refer to the power domains for
respective power islands from the device tree.

Signed-off-by: Lubomir Rintel <[email protected]>
Acked-by: Rob Herring <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Stephen Boyd <[email protected]>

Author: lkundrak

include/dt-bindings/power/marvell,mmp2.h

@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DTS_MARVELL_MMP2_POWER_H
+#define __DTS_MARVELL_MMP2_POWER_H
+
+#define MMP2_POWER_DOMAIN_GPU		0
+#define MMP2_POWER_DOMAIN_AUDIO		1
+#define MMP3_POWER_DOMAIN_CAMERA	2
+
+#define MMP2_NR_POWER_DOMAINS		3
+
+#endif