clk: Collapse gpio clk kerneldoc

We have two kernel-docs for gpio clks, but there is only one gpio clk
structure. Collapse the two so we have proper kerneldoc for this basic
clk type.

Signed-off-by: Stephen Boyd <sboyd@kernel.org>

include/linux/clk-provider.h

@@ -712,16 +712,19 @@ struct clk_hw *clk_hw_register_composite(struct device *dev, const char *name,
 		unsigned long flags);
 void clk_hw_unregister_composite(struct clk_hw *hw);
 
-/***
- * struct clk_gpio_gate - gpio gated clock
+/**
+ * struct clk_gpio - gpio gated clock
  *
  * @hw:		handle between common and hardware-specific interfaces
  * @gpiod:	gpio descriptor
  *
- * Clock with a gpio control for enabling and disabling the parent clock.
- * Implements .enable, .disable and .is_enabled
+ * Clock with a gpio control for enabling and disabling the parent clock
+ * or switching between two parents by asserting or deasserting the gpio.
+ *
+ * Implements .enable, .disable and .is_enabled or
+ * .get_parent, .set_parent and .determine_rate depending on which clk_ops
+ * is used.
  */
-
 struct clk_gpio {
 	struct clk_hw	hw;
 	struct gpio_desc *gpiod;
@@ -738,16 +741,6 @@ struct clk_hw *clk_hw_register_gpio_gate(struct device *dev, const char *name,
 		unsigned long flags);
 void clk_hw_unregister_gpio_gate(struct clk_hw *hw);
 
-/**
- * struct clk_gpio_mux - gpio controlled clock multiplexer
- *
- * @hw:		see struct clk_gpio
- * @gpiod:	gpio descriptor to select the parent of this clock multiplexer
- *
- * Clock with a gpio control for selecting the parent clock.
- * Implements .get_parent, .set_parent and .determine_rate
- */
-
 extern const struct clk_ops clk_gpio_mux_ops;
 struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
 		const char * const *parent_names, u8 num_parents, struct gpio_desc *gpiod,