smbios: Drop the unused Kconfig options

Now that we can use devicetree to specify this information, drop the old
CONFIG options.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/lib/smbios.c b/lib/smbios.c
index a52a9d5..485a812 100644
--- a/lib/smbios.c
+++ b/lib/smbios.c
@@ -65,30 +65,6 @@
 }
 
 /**
- * smbios_add_prop_default() - Add a property from the device tree or default
- *
- * @start:	string area start address
- * @node:	node containing the information to write (ofnode_null() if none)
- * @prop:	property to write
- * @def:	default string if the node has no such property
- * @return 0 if not found, else SMBIOS string number (1 or more)
- */
-static int smbios_add_prop_default(char *start, ofnode node, const char *prop,
-				   const char *def)
-{
-	const char *str = NULL;
-
-	if (IS_ENABLED(CONFIG_OF_CONTROL))
-		str = ofnode_read_string(node, prop);
-	if (str)
-		return smbios_add_string(start, str);
-	else if (def)
-		return smbios_add_string(start, def);
-
-	return 0;
-}
-
-/**
  * smbios_add_prop() - Add a property from the device tree
  *
  * @start:	string area start address
@@ -98,7 +74,16 @@
  */
 static int smbios_add_prop(char *start, ofnode node, const char *prop)
 {
-	return smbios_add_prop_default(start, node, prop, NULL);
+
+	if (IS_ENABLED(CONFIG_OF_CONTROL)) {
+		const char *str;
+
+		str = ofnode_read_string(node, prop);
+		if (str)
+			return smbios_add_string(start, str);
+	}
+
+	return 0;
 }
 
 /**
@@ -169,10 +154,8 @@
 	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type1));
 	fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
-	t->manufacturer = smbios_add_prop_default(t->eos, node, "manufacturer",
-						  CONFIG_SMBIOS_MANUFACTURER);
-	t->product_name = smbios_add_prop_default(t->eos, node, "product",
-						  CONFIG_SMBIOS_PRODUCT_NAME);
+	t->manufacturer = smbios_add_prop(t->eos, node, "manufacturer");
+	t->product_name = smbios_add_prop(t->eos, node, "product");
 	t->version = smbios_add_prop(t->eos, node, "version");
 	if (serial_str) {
 		t->serial_number = smbios_add_string(t->eos, serial_str);
@@ -198,10 +181,8 @@
 	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type2));
 	fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
-	t->manufacturer = smbios_add_prop_default(t->eos, node, "manufacturer",
-						  CONFIG_SMBIOS_MANUFACTURER);
-	t->product_name = smbios_add_prop_default(t->eos, node, "product",
-						  CONFIG_SMBIOS_PRODUCT_NAME);
+	t->manufacturer = smbios_add_prop(t->eos, node, "manufacturer");
+	t->product_name = smbios_add_prop(t->eos, node, "product");
 	t->asset_tag_number = smbios_add_prop(t->eos, node, "asset-tag");
 	t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
 	t->board_type = SMBIOS_BOARD_MOTHERBOARD;
@@ -221,8 +202,7 @@
 	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type3));
 	fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
-	t->manufacturer = smbios_add_prop_default(t->eos, node, "manufacturer",
-						  CONFIG_SMBIOS_MANUFACTURER);
+	t->manufacturer = smbios_add_prop(t->eos, node, "manufacturer");
 	t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
 	t->bootup_state = SMBIOS_STATE_SAFE;
 	t->power_supply_state = SMBIOS_STATE_SAFE;