regulator: core: have _regulator_get() accept get_type argument

Instead of separate "exclusive" and "allow_dummy" arguments, that formed 3
valid combinations (normal, exclusive and optional) and an invalid one,
let's accept explicit "get_type", like we did in devm-managed code.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/regulator/internal.h b/drivers/regulator/internal.h
index c74ac87..1dd575b 100644
--- a/drivers/regulator/internal.h
+++ b/drivers/regulator/internal.h
@@ -51,4 +51,14 @@
 }
 #endif
 
+enum regulator_get_type {
+	NORMAL_GET,
+	EXCLUSIVE_GET,
+	OPTIONAL_GET,
+	MAX_GET_TYPE
+};
+
+struct regulator *_regulator_get(struct device *dev, const char *id,
+				 enum regulator_get_type get_type);
+
 #endif