pinctrl: lewisburg: Update number of pins in community

When updating pin names for Intel Lewisburg, the numbers of pins were
left behind. Update them accordingly.

Fixes: e66ff71f ("pinctrl: lewisburg: Update pin list according to v1.1v6")
Signed-off-by: Yuanyuan Zhong <yzhong@purestorage.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>