pinctrl: intel: Replace kernel.h by what is actually being used

The kernel.h is a mess of unrelated things and we only used it
as a proxy to array_size.h, hence switch from former to the latter.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Author: andy-shev

drivers/pinctrl/intel/pinctrl-intel.h

@@ -10,11 +10,11 @@
 #ifndef PINCTRL_INTEL_H
 #define PINCTRL_INTEL_H
 
+#include <linux/array_size.h>
 #include <linux/bits.h>
 #include <linux/compiler_types.h>
 #include <linux/gpio/driver.h>
 #include <linux/irq.h>
-#include <linux/kernel.h>
 #include <linux/pm.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/spinlock_types.h>