Remove dependence on <linux/spinlock.h>

Use local definitions for the ioctl codes needed to access the RTC.

Note : not tested.  Some architectures not handled yet.

rtc_linux.c

@@ -43,32 +43,6 @@
 #include <sys/time.h>
 #include <sys/types.h>
 
-#ifdef HAS_SPINLOCK_H
-#include <linux/spinlock.h>
-#else
-/* Include dummy definition of spinlock_t to cope with earlier kernels. */
-typedef int spinlock_t;
-#endif
-
-/* This is a complete hack since the alpha sys/io.h needs these types
- * but does not arrange them to be defined.  This is almost certainly
- * not how one should do these things.  -- broonie
- */
-#include <linux/types.h>
-#ifdef __alpha__
-typedef __u8  u8;
-typedef __u16 u16;
-typedef __u32 u32;
-typedef __u64 u64;
-#endif
-
-#if defined(__i386__) /* || defined(__sparc__) */
-#include <linux/mc146818rtc.h>
-#else
-#include <linux/rtc.h>
-#define RTC_UIE 0x10		/* update-finished interrupt enable */
-#endif
-
 #include <sys/ioctl.h>
 #include <fcntl.h>
 #include <unistd.h>
@@ -84,10 +58,23 @@ typedef __u64 u64;
 #include "regress.h"
 #include "rtc.h"
 #include "rtc_linux.h"
+#include "io_linux.h"
 #include "conf.h"
 #include "memory.h"
 #include "mkdirpp.h"
 
+struct rtc_time {
+	int tm_sec;
+	int tm_min;
+	int tm_hour;
+	int tm_mday;
+	int tm_mon;
+	int tm_year;
+	int tm_wday;
+	int tm_yday;
+	int tm_isdst;
+};
+
 /* ================================================== */
 /* Forward prototypes */