smbios: Supply tag type 2 (base board information)

Information really contained in it is mostly the same as in type 1 tag.
However Linux uses type 2 to match hardware. Duplicate the info.

Change-Id: I75e13d764464053ecab4a833fbb83836cedf26e6
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/5322
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/include/smbios.h

@@ -37,6 +37,7 @@ void smbios_mainboard_set_uuid(u8 *uuid);
 typedef enum {
 	SMBIOS_BIOS_INFORMATION=0,
 	SMBIOS_SYSTEM_INFORMATION=1,
+	SMBIOS_BOARD_INFORMATION=2,
 	SMBIOS_SYSTEM_ENCLOSURE=3,
 	SMBIOS_PROCESSOR_INFORMATION=4,
 	SMBIOS_CACHE_INFORMATION=7,
@@ -102,6 +103,17 @@ struct smbios_type1 {
 	char eos[2];
 } __attribute__((packed));
 
+struct smbios_type2 {
+	u8 type;
+	u8 length;
+	u16 handle;
+	u8 manufacturer;
+	u8 product_name;
+	u8 version;
+	u8 serial_number;
+	char eos[2];
+} __attribute__((packed));
+
 struct smbios_type3 {
 	u8 type;
 	u8 length;