Extract PIT related macros to the newly created peripherals/pit.h

right/src/peripherals/pit.h

@@ -0,0 +1,16 @@
+#ifndef __PIT_H__
+#define __PIT_H__
+
+// Macros:
+
+    #define PIT_SOURCE_CLOCK CLOCK_GetFreq(kCLOCK_BusClk)
+
+    #define PIT_I2C_WATCHDOG_HANDLER PIT0_IRQHandler
+    #define PIT_I2C_WATCHDOG_IRQ_ID  PIT0_IRQn
+    #define PIT_I2C_WATCHDOG_CHANNEL kPIT_Chnl_0
+
+    #define PIT_KEY_SCANNER_HANDLER  PIT1_IRQHandler
+    #define PIT_KEY_SCANNER_IRQ_ID   PIT1_IRQn
+    #define PIT_KEY_SCANNER_CHANNEL  kPIT_Chnl_1
+
+#endif