haswell: Add function to retrieve SPD addresses

And use it instead of directly writing to the MRC struct.

Change-Id: I7f04db29a08512c1a8b2b2300dba71cb3b84a5c5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43127
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tristan Corrick <tristan@corrick.kiwi>
diff --git a/src/mainboard/supermicro/x10slm-f/romstage.c b/src/mainboard/supermicro/x10slm-f/romstage.c
index 26f820a..036a89c 100644
--- a/src/mainboard/supermicro/x10slm-f/romstage.c
+++ b/src/mainboard/supermicro/x10slm-f/romstage.c
@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <stdint.h>
 #include <northbridge/intel/haswell/haswell.h>
 #include <northbridge/intel/haswell/raminit.h>
 #include <southbridge/intel/lynxpoint/pch.h>
@@ -16,12 +17,16 @@
 	RCBA16(D20IR) = DIR_ROUTE(PIRQA, PIRQB, PIRQC, PIRQD);
 }
 
+void mb_get_spd_map(uint8_t spd_map[4])
+{
+	spd_map[0] = 0xa0;
+	spd_map[1] = 0xa2;
+	spd_map[2] = 0xa4;
+	spd_map[3] = 0xa6;
+}
+
 void mainboard_fill_pei_data(struct pei_data *pei_data)
 {
-	pei_data->spd_addresses[0] = 0xa0;
-	pei_data->spd_addresses[1] = 0xa2;
-	pei_data->spd_addresses[2] = 0xa4;
-	pei_data->spd_addresses[3] = 0xa6;
 	pei_data->ec_present = 0;
 
 	struct usb2_port_setting usb2_ports[MAX_USB2_PORTS] = {