boardid: Minor clean up and standardization

Merge the different coreboot table strapping ID structures into one
because they're really just all the same, and I want to add more. Make
the signature of the board_id() function return a uint32_t because
that's also what goes in the coreboot table. Add a printk to the generic
code handling strapping IDs in ramstage so that not every individual
mainboard implementation needs its own print. (In turn, remove one such
print from fsp1_1 code because it's in the way of my next patch.)

Change-Id: Ib9563edf07b623a586a4dc168fe357564c5e68b5
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/22741
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/drivers/intel/fsp1_1/romstage.c

@@ -20,7 +20,6 @@
 #include <arch/cbfs.h>
 #include <arch/early_variables.h>
 #include <assert.h>
-#include <boardid.h>
 #include <console/console.h>
 #include <cbmem.h>
 #include <cpu/intel/microcode.h>
@@ -74,13 +73,6 @@ asmlinkage void *romstage_main(FSP_INFO_HEADER *fih)
 	/* Get power state */
 	params.power_state = fill_power_state();
 
-	/*
-	 * Read and print board version.  Done after SOC romstage
-	 * in case PCH needs to be configured to talk to the EC.
-	 */
-	if (IS_ENABLED(CONFIG_BOARD_ID_AUTO))
-		printk(BIOS_INFO, "MLB: board version %d\n", board_id());
-
 	/* Call into mainboard. */
 	mainboard_romstage_entry(&params);
 	soc_after_ram_init(&params);