spd.c: move functions around to get rid of prototypes

Also,
 * remove dead struct ascii_map
 * rename piix4_get_smb() to sb600_get_smb() (sic!)

Change-Id: I3755c5206f877f4ae395258bba99af4182a8758d
Signed-off-by: Stefan Tauner <stefan.tauner@gmx.at>
Reviewed-on: https://review.coreboot.org/28220
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed