intel/fsp1_0: Add option to select FSP debug level

Useful for debugging FSP.

Change-Id: I06e837cf1b051c55a531c3361e94fa1449bc8526
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/30741
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>

src/drivers/intel/fsp1_0/Kconfig

@@ -34,6 +34,17 @@ config DCACHE_RAM_SIZE
 	hex
 	default 0x4000
 
+config FSP_1_0_DEBUG_LEVEL
+	int "FSP debug level (0-3)"
+	default 0
+	range 0 3
+	help
+	  Select the debug level, where:
+	   0: DISABLED
+	   1: MINIMUM
+	   2: NORMAL
+	   3: MAXIMUM
+
 if HAVE_FSP_BIN
 
 config FSP_FILE

src/soc/intel/fsp_broadwell_de/fsp/chipset_fsp_util.c

@@ -69,6 +69,8 @@ static void ConfigureDefaultUpdData(UPD_DATA_REGION *UpdData)
 	if (!IS_ENABLED(CONFIG_CONSOLE_SERIAL))
 		UpdData->SerialPortType = 0;
 
+	UpdData->DebugOutputLevel = CONFIG_FSP_1_0_DEBUG_LEVEL;
+
 	/*
 	 * Memory Down
 	 */