pinctrl: intel: Get rid of redundant 'else' in intel_config_set_debounce()

In a code like
	if (...) {
		...
		goto label;
	} else {
		...
	}
the 'else' keyword is redundant. Get rid of it for better readability.

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