mb/google/volteer/variant/lindar: Disable SA GV for Samsung memory with wrong date code MB

Disable SA GV, because factory used Samsung memory with wrong date code.
So we need to use board version to identify build MB phase to disable SA GV.
Disable SA GV when board version equal one.

BUG=b:179747696
BRANCH=firmware-volteer-13672.B
TEST=Built and booted into OS.

Signed-off-by: Kevin Chang <kevin.chang@lcfc.corp-partner.google.com>
Change-Id: I51f4adcf0dd8dbf1cf39d8aec6e4303565551e5f
Signed-off-by: Kevin Chang <kevin.chang@lcfc.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51200
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/volteer/romstage.c

@@ -22,4 +22,9 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 	bool half_populated = gpio_get(GPIO_MEM_CH_SEL);
 
 	memcfg_init(mem_cfg, board_cfg, &spd_info, half_populated);
+	memcfg_variant_init(mupd);
+}
+
+void __weak memcfg_variant_init(FSPM_UPD *mupd)
+{
 }

src/mainboard/google/volteer/variants/baseboard/include/baseboard/variants.h

@@ -21,6 +21,7 @@ const struct cros_gpio *variant_cros_gpios(size_t *num);
 
 const struct mb_cfg *variant_memory_params(void);
 int variant_memory_sku(void);
+void memcfg_variant_init(FSPM_UPD *mupd);
 
 /* Modify devictree settings during ramstage. */
 void variant_devtree_update(void);

src/mainboard/google/volteer/variants/lindar/memory.c

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <baseboard/variants.h>
+#include <boardid.h>
 
 static const struct mb_cfg board_memcfg = {
 	.type = MEM_TYPE_LP4X,
@@ -59,3 +60,11 @@ const struct mb_cfg *variant_memory_params(void)
 {
 	return &board_memcfg;
 }
+
+void memcfg_variant_init(FSPM_UPD *mupd)
+{
+	FSP_M_CONFIG *mem_cfg = &mupd->FspmConfig;
+
+	if (board_id() == 1)
+		mem_cfg->SaGv = 0x00;
+}