Boards: Add max_rom_decode_parallel entry to board enable table

This is a quick fix for board specific parallel addressing limits.

Corresponding to flashrom svn r875.

Signed-off-by: Luc Verhaegen <libv@skynet.be>
Acked-by: Sean Nelson <audiohacked@gmail.com>

flash.h

@@ -275,6 +275,7 @@ struct board_pciid_enable {
 	const char *vendor_name;
 	const char *board_name;
 
+	int max_rom_decode_parallel;
 	int (*enable) (const char *name);
 };