Add a structure defintion for the id prom contents.

Obtained from:	NetBSD

sys/sparc64/include/idprom.h

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 1993 Adam Glass
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Adam Glass.
+ * 4. The name of the Author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	from: NetBSD: idprom.h,v 1.2 1998/09/05 23:57:26 eeh Exp
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_IDPROM_H_
+#define _MACHINE_IDPROM_H_
+
+/*
+ * ID prom format.  The ``host id'' is set up by taking the machine
+ * ID as the top byte and the hostid field as the remaining three.
+ * The id_xxx0 field appears to contain some other number.  The id_xxx1
+ * contains a bunch of 00's and a5's on my machines, suggesting it is
+ * not actually used.  The checksum seems to include them, however.
+ */
+struct idprom {
+	u_char	id_format;		/* format identifier (= 1) */
+	u_char	id_machine;		/* machine type (see param.h) */
+	u_char	id_ether[6];		/* ethernet address */
+	int	id_date;		/* date of manufacture */
+	u_char	id_hostid[3];		/* ``host id'' bytes */
+	u_char	id_checksum;		/* xor of everything else */
+	char	id_undef[16];		/* undefined */
+};
+
+#define ID_SUN4_100	0x22
+#define ID_SUN4_200	0x21
+#define ID_SUN4_300	0x23
+#define ID_SUN4_400	0x24
+
+#define IDPROM_VERSION 1
+
+#endif /* !_MACHINE_IDPROM_H_ */