mb/google/octopus: override smbios manufacturer name from CBI

BUG=b:118798180
TEST=emerge-octopus

Change-Id: I241a76e3b55ad721c6c0176462c310bcca6b3c5d
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/29503
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/octopus/mainboard.c

@@ -180,3 +180,22 @@ void mainboard_devtree_update(struct device *dev)
 	/* Defer to variant for board-specific updates. */
 	variant_update_devtree(dev);
 }
+
+const char *smbios_mainboard_manufacturer(void)
+{
+	static char oem_name[32];
+	static const char *manuf;
+
+	if (manuf)
+		return manuf;
+
+	if (google_chromeec_cbi_get_oem_name(&oem_name[0],
+			ARRAY_SIZE(oem_name)) < 0) {
+		printk(BIOS_ERR, "Couldn't obtain OEM name from CBI\n");
+		manuf = CONFIG_MAINBOARD_SMBIOS_MANUFACTURER;
+	} else {
+		manuf = &oem_name[0];
+	}
+
+	return manuf;
+}