dm: rtc: Split structure definition into its own file

Move the definition of struct rtc_time into a separate file so that sandbox
can include it without requiring common.h and the like.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/rtc.h

@@ -15,31 +15,7 @@
  * it there instead of in evey single driver */
 
 #include <bcd.h>
-
-/*
- * The struct used to pass data from the generic interface code to
- * the hardware dependend low-level code ande vice versa. Identical
- * to struct rtc_time used by the Linux kernel.
- *
- * Note that there are small but significant differences to the
- * common "struct time":
- *
- *		struct time:		struct rtc_time:
- * tm_mon	0 ... 11		1 ... 12
- * tm_year	years since 1900	years since 0
- */
-
-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;
-};
+#include <rtc_def.h>
 
 int rtc_get (struct rtc_time *);
 int rtc_set (struct rtc_time *);

include/rtc_def.h

@@ -0,0 +1,36 @@
+/*
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __rtc_def_h
+#define __rtc_def_h
+
+/*
+ * The struct used to pass data from the generic interface code to
+ * the hardware dependend low-level code ande vice versa. Identical
+ * to struct rtc_time used by the Linux kernel.
+ *
+ * Note that there are small but significant differences to the
+ * common "struct time":
+ *
+ *		struct time:		struct rtc_time:
+ * tm_mon	0 ... 11		1 ... 12
+ * tm_year	years since 1900	years since 0
+ */
+
+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;
+};
+
+#endif