Add RTC peripheral from ASF4 (CALENDAR)

Change-Id: I04b6608b72f22cf9829a5bfdddf7cbbbbe8ebb3e
diff --git a/sysmoOCTSIM/driver_init.h b/sysmoOCTSIM/driver_init.h
index 6c4f3a1..de5e441 100644
--- a/sysmoOCTSIM/driver_init.h
+++ b/sysmoOCTSIM/driver_init.h
@@ -21,12 +21,14 @@
 #include <hal_io.h>
 #include <hal_sleep.h>
 
+#include <hal_calendar.h>
 #include <hal_usart_sync.h>
 #include <hal_usart_async.h>
 #include <hal_usart_async_rings.h>
 
 #include "hal_usb_device.h"
 
+extern struct calendar_descriptor CALENDAR_0;
 extern struct usart_async_descriptor SIM0;
 extern struct usart_async_descriptor SIM1;
 extern struct usart_async_descriptor SIM2;
@@ -36,6 +38,9 @@
 extern struct usart_async_descriptor SIM6;
 extern struct usart_async_rings_descriptor UART_debug;
 
+void CALENDAR_0_CLOCK_init(void);
+void CALENDAR_0_init(void);
+
 void SIM0_PORT_init(void);
 void SIM0_CLOCK_init(void);
 void SIM0_init(void);