rust: regulator: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-35-a2e13cbc17a6@google.com
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Darksonn

rust/helpers/regulator.c

@@ -4,48 +4,52 @@
 
 #ifndef CONFIG_REGULATOR
 
-void rust_helper_regulator_put(struct regulator *regulator)
+__rust_helper void rust_helper_regulator_put(struct regulator *regulator)
 {
 	regulator_put(regulator);
 }
 
-int rust_helper_regulator_set_voltage(struct regulator *regulator, int min_uV,
-				      int max_uV)
+__rust_helper int rust_helper_regulator_set_voltage(struct regulator *regulator,
+						    int min_uV, int max_uV)
 {
 	return regulator_set_voltage(regulator, min_uV, max_uV);
 }
 
-int rust_helper_regulator_get_voltage(struct regulator *regulator)
+__rust_helper int rust_helper_regulator_get_voltage(struct regulator *regulator)
 {
 	return regulator_get_voltage(regulator);
 }
 
-struct regulator *rust_helper_regulator_get(struct device *dev, const char *id)
+__rust_helper struct regulator *rust_helper_regulator_get(struct device *dev,
+							  const char *id)
 {
 	return regulator_get(dev, id);
 }
 
-int rust_helper_regulator_enable(struct regulator *regulator)
+__rust_helper int rust_helper_regulator_enable(struct regulator *regulator)
 {
 	return regulator_enable(regulator);
 }
 
-int rust_helper_regulator_disable(struct regulator *regulator)
+__rust_helper int rust_helper_regulator_disable(struct regulator *regulator)
 {
 	return regulator_disable(regulator);
 }
 
-int rust_helper_regulator_is_enabled(struct regulator *regulator)
+__rust_helper int rust_helper_regulator_is_enabled(struct regulator *regulator)
 {
 	return regulator_is_enabled(regulator);
 }
 
-int rust_helper_devm_regulator_get_enable(struct device *dev, const char *id)
+__rust_helper int rust_helper_devm_regulator_get_enable(struct device *dev,
+							const char *id)
 {
 	return devm_regulator_get_enable(dev, id);
 }
 
-int rust_helper_devm_regulator_get_enable_optional(struct device *dev, const char *id)
+__rust_helper int
+rust_helper_devm_regulator_get_enable_optional(struct device *dev,
+					       const char *id)
 {
 	return devm_regulator_get_enable_optional(dev, id);
 }