regulator: da9211: Move buck modes into header file

This will allow device trees to make use of these constants.
Signed-off-by: Anand K Mistry <amistry@google.com>
Link: https://lore.kernel.org/r/20200702131350.1.I96e67ab7b4568287eb939e8a572cbc03e87f1aa0@changeidSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/da9211-regulator.c

@@ -17,6 +17,7 @@
 #include <linux/gpio/consumer.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/regulator/da9211.h>
+#include <dt-bindings/regulator/dlg,da9211-regulator.h>
 #include "da9211-regulator.h"
 
 /* DEVICE IDs */
@@ -24,10 +25,6 @@
 #define DA9213_DEVICE_ID	0x23
 #define DA9215_DEVICE_ID	0x24
 
-#define DA9211_BUCK_MODE_SLEEP	1
-#define DA9211_BUCK_MODE_SYNC	2
-#define DA9211_BUCK_MODE_AUTO	3
-
 /* DA9211 REGULATOR IDs */
 #define DA9211_ID_BUCKA	0
 #define DA9211_ID_BUCKB	1

include/dt-bindings/regulator/dlg,da9211-regulator.h

+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_REGULATOR_DLG_DA9211_H
+#define _DT_BINDINGS_REGULATOR_DLG_DA9211_H
+
+/*
+ * These buck mode constants may be used to specify values in device tree
+ * properties (e.g. regulator-initial-mode, regulator-allowed-modes).
+ * A description of the following modes is in the manufacturers datasheet.
+ */
+
+#define DA9211_BUCK_MODE_SLEEP		1
+#define DA9211_BUCK_MODE_SYNC		2
+#define DA9211_BUCK_MODE_AUTO		3
+
+#endif