pinctrl: core: Fix a bunch of kerneldoc issues

Most are likely due to bitrot/API slip.  Some are formatting issues.

Fixes the following W=1 kernel build warning(s):

 drivers/pinctrl/core.c:167: warning: Function parameter or member 'pin' not described in 'pin_get_name'
 drivers/pinctrl/core.c:167: warning: Excess function parameter 'name' description in 'pin_get_name'
 drivers/pinctrl/core.c:584: warning: Function parameter or member 'selector' not described in 'pinctrl_generic_get_group'
 drivers/pinctrl/core.c:584: warning: Excess function parameter 'gselector' description in 'pinctrl_generic_get_group'
 drivers/pinctrl/core.c:1356: error: Cannot parse struct or union!
 drivers/pinctrl/core.c:1458: warning: Function parameter or member 'map' not described in 'pinctrl_unregister_mappings'
 drivers/pinctrl/core.c:1458: warning: Excess function parameter 'maps' description in 'pinctrl_unregister_mappings'
 drivers/pinctrl/core.c:2239: warning: Function parameter or member 'pctldev' not described in 'devm_pinctrl_register_and_init'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200713144930.1034632-12-lee.jones@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/core.c

@@ -161,7 +161,7 @@ int pin_get_from_name(struct pinctrl_dev *pctldev, const char *name)
 /**
  * pin_get_name_from_id() - look up a pin name from a pin id
  * @pctldev: the pin control device to lookup the pin on
- * @name: the name of the pin to look up
+ * @pin: pin number/id to look up
  */
 const char *pin_get_name(struct pinctrl_dev *pctldev, const unsigned pin)
 {
@@ -577,7 +577,7 @@ EXPORT_SYMBOL_GPL(pinctrl_generic_get_group_pins);
 /**
  * pinctrl_generic_get_group() - returns a pin group based on the number
  * @pctldev: pin controller device
- * @gselector: group number
+ * @selector: group number
  */
 struct group_desc *pinctrl_generic_get_group(struct pinctrl_dev *pctldev,
 					     unsigned int selector)
@@ -1329,7 +1329,7 @@ static void devm_pinctrl_release(struct device *dev, void *res)
 }
 
 /**
- * struct devm_pinctrl_get() - Resource managed pinctrl_get()
+ * devm_pinctrl_get() - Resource managed pinctrl_get()
  * @dev: the device to obtain the handle for
  *
  * If there is a need to explicitly destroy the returned struct pinctrl,
@@ -1451,7 +1451,7 @@ EXPORT_SYMBOL_GPL(pinctrl_register_mappings);
 
 /**
  * pinctrl_unregister_mappings() - unregister a set of pin controller mappings
- * @maps: the pincontrol mappings table passed to pinctrl_register_mappings()
+ * @map: the pincontrol mappings table passed to pinctrl_register_mappings()
  *	when registering the mappings.
  */
 void pinctrl_unregister_mappings(const struct pinctrl_map *map)
@@ -2226,9 +2226,9 @@ EXPORT_SYMBOL_GPL(devm_pinctrl_register);
  * @dev: parent device for this pin controller
  * @pctldesc: descriptor for this pin controller
  * @driver_data: private pin controller data for this pin controller
+ * @pctldev: pin controller device
  *
- * Returns an error pointer if pincontrol register failed. Otherwise
- * it returns valid pinctrl handle.
+ * Returns zero on success or an error number on failure.
  *
  * The pinctrl device will be automatically released when the device is unbound.
  */