usb: phy: convert EXPORT_SYMBOL to EXPORT_SYMBOL_GPL

we only want GPL users for our generic functions,
so let's switch over to EXPORT_SYMBOL_GPL.
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/phy/phy.c

@@ -109,7 +109,7 @@ struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type)
 
 	return phy;
 }
-EXPORT_SYMBOL(devm_usb_get_phy);
+EXPORT_SYMBOL_GPL(devm_usb_get_phy);
 
 /**
  * usb_get_phy - find the USB PHY
@@ -142,7 +142,7 @@ struct usb_phy *usb_get_phy(enum usb_phy_type type)
 
 	return phy;
 }
-EXPORT_SYMBOL(usb_get_phy);
+EXPORT_SYMBOL_GPL(usb_get_phy);
 
  /**
  * devm_usb_get_phy_by_phandle - find the USB PHY by phandle
@@ -206,7 +206,7 @@ struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
 
 	return phy;
 }
-EXPORT_SYMBOL(devm_usb_get_phy_by_phandle);
+EXPORT_SYMBOL_GPL(devm_usb_get_phy_by_phandle);
 
 /**
  * usb_get_phy_dev - find the USB PHY
@@ -239,7 +239,7 @@ struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index)
 
 	return phy;
 }
-EXPORT_SYMBOL(usb_get_phy_dev);
+EXPORT_SYMBOL_GPL(usb_get_phy_dev);
 
 /**
  * devm_usb_get_phy_dev - find the USB PHY using device ptr and index
@@ -269,7 +269,7 @@ struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index)
 
 	return phy;
 }
-EXPORT_SYMBOL(devm_usb_get_phy_dev);
+EXPORT_SYMBOL_GPL(devm_usb_get_phy_dev);
 
 /**
  * devm_usb_put_phy - release the USB PHY
@@ -288,7 +288,7 @@ void devm_usb_put_phy(struct device *dev, struct usb_phy *phy)
 	r = devres_destroy(dev, devm_usb_phy_release, devm_usb_phy_match, phy);
 	dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n");
 }
-EXPORT_SYMBOL(devm_usb_put_phy);
+EXPORT_SYMBOL_GPL(devm_usb_put_phy);
 
 /**
  * usb_put_phy - release the USB PHY
@@ -307,7 +307,7 @@ void usb_put_phy(struct usb_phy *x)
 		module_put(owner);
 	}
 }
-EXPORT_SYMBOL(usb_put_phy);
+EXPORT_SYMBOL_GPL(usb_put_phy);
 
 /**
  * usb_add_phy - declare the USB PHY
@@ -347,7 +347,7 @@ int usb_add_phy(struct usb_phy *x, enum usb_phy_type type)
 	spin_unlock_irqrestore(&phy_lock, flags);
 	return ret;
 }
-EXPORT_SYMBOL(usb_add_phy);
+EXPORT_SYMBOL_GPL(usb_add_phy);
 
 /**
  * usb_add_phy_dev - declare the USB PHY
@@ -377,7 +377,7 @@ int usb_add_phy_dev(struct usb_phy *x)
 	spin_unlock_irqrestore(&phy_lock, flags);
 	return 0;
 }
-EXPORT_SYMBOL(usb_add_phy_dev);
+EXPORT_SYMBOL_GPL(usb_add_phy_dev);
 
 /**
  * usb_remove_phy - remove the OTG PHY
@@ -399,7 +399,7 @@ void usb_remove_phy(struct usb_phy *x)
 	}
 	spin_unlock_irqrestore(&phy_lock, flags);
 }
-EXPORT_SYMBOL(usb_remove_phy);
+EXPORT_SYMBOL_GPL(usb_remove_phy);
 
 /**
  * usb_bind_phy - bind the phy and the controller that uses the phy