pinctrl: intel: Drop the only label in the code for consistency

Drop the only label in the code, i.e. in intel_config_set_debounce(),
for consistency with the rest. In entire driver we use multipoint
return.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>