mb/intel/harcuvar: Fix board_id() return type

The weak definition of board_id() in coreboot_table.c returns a
uint32_t, so update this function to match. This fixes a compiler error
when using LTO.

Change-Id: I6ad03ecedcf4a4d9f0c917cdc760f81ddde06d11
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39015
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Guckian
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/intel/harcuvar/boardid.c

@@ -5,7 +5,7 @@
 
 #include "harcuvar_boardid.h"
 
-uint8_t board_id(void)
+uint32_t board_id(void)
 {
 	int id = BoardIdHarcuvar;
 

src/mainboard/intel/harcuvar/harcuvar_boardid.h

@@ -8,6 +8,6 @@
 
 #define BoardIdHarcuvar 0x52
 
-uint8_t board_id(void);
+uint32_t board_id(void);
 
 #endif /* MAINBOARD_BOARD_H */

src/mainboard/intel/harcuvar/hsio.c

@@ -7,7 +7,7 @@
 
 size_t mainboard_get_hsio_config(BL_HSIO_INFORMATION **p_hsio_config)
 {
-    uint8_t boardid = board_id();
+    uint32_t boardid = board_id();
     size_t num;
     switch (boardid) {
     case BoardIdHarcuvar:

src/mainboard/intel/harcuvar/romstage.c

@@ -88,7 +88,7 @@ void mainboard_config_gpios(void)
 {
 	size_t num;
 	const struct dnv_pad_config *table;
-	uint8_t boardid = board_id();
+	uint32_t boardid = board_id();
 
 	/* Configure pads prior to SiliconInit() in case there's any
 	* dependencies during hardware initialization.