pinctrl: icelake: Replace ICL_COMMUNITY() by INTEL_COMMUNITY_GPPS()

Use INTEL_COMMUNITY_GPPS() common macro instead custom ICL_COMMUNITY().

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