pinctrl: pinconf-generic: Add function parameter description 'pctldev'

Fix a spelling/typo while we're here.

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

 drivers/pinctrl/pinconf-generic.c:242: warning: Function parameter or member 'pctldev' not described in 'pinconf_generic_parse_dt_config'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200713144930.1034632-15-lee.jones@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinconf-generic.c

@@ -231,9 +231,10 @@ static void parse_dt_cfg(struct device_node *np,
  * pinconf_generic_parse_dt_config()
  * parse the config properties into generic pinconfig values.
  * @np: node containing the pinconfig properties
+ * @pctldev: pincontrol device
  * @configs: array with nconfigs entries containing the generic pinconf values
  *           must be freed when no longer necessary.
- * @nconfigs: umber of configurations
+ * @nconfigs: number of configurations
  */
 int pinconf_generic_parse_dt_config(struct device_node *np,
 				    struct pinctrl_dev *pctldev,