pinctrl: intel: Add blank line before endif in Kconfig

Add a blank line before endif directive in Kconfig for better readability.

Signed-off-by: Andy Shevchenko <[e-mail]>
Acked-by: Mika Westerberg <[e-mail]>

drivers/pinctrl/intel/Kconfig

···
 	help
 	  This pinctrl driver provides an interface that allows configuring
 	  of Intel Tiger Lake PCH pins and using them as GPIOs.
+
 endif