pinctrl: lynxpoint: Unify initcall location in the code

Like in the other Intel pin control drivers, attach initcalls
to the corresponding functions. No functional change intended.

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