static int nmk_pmx_get_func_groups(struct pinctrl_dev *pctldev,
				   unsigned function,
				   const char * const **groups,
				   unsigned * const num_groups)
static int nmk_pmx_get_func_groups(struct pinctrl_dev *pctldev,
				   unsigned int function,
				   const char * const **groups,
				   unsigned * const num_groups)