Treat /vendor like /system for read only

The vendor partition is verity checked just like system so we
should treat vendor as read only same as system.

Change-Id: Ida65c9f44d8610e52fcdcef0b4a50faf5c7110d2
diff --git a/partition.cpp b/partition.cpp
index 3f7b26c..e110ba7 100644
--- a/partition.cpp
+++ b/partition.cpp
@@ -354,6 +354,11 @@
 			Backup_Display_Name = Display_Name;
 			DataManager::SetValue("tw_boot_is_mountable", 1);
 			Can_Be_Backed_Up = true;
+		} else if (Mount_Point == "/vendor") {
+			Display_Name = "Vendor";
+			Backup_Display_Name = Display_Name;
+			Storage_Name = Display_Name;
+			Mount_Read_Only = true;
 		}
 #ifdef TW_EXTERNAL_STORAGE_PATH
 		if (Mount_Point == EXPAND(TW_EXTERNAL_STORAGE_PATH)) {
@@ -399,6 +404,11 @@
 			Backup_Display_Name = Display_Name;
 			Can_Flash_Img = false;
 			Can_Be_Backed_Up = true;
+		} else if (Mount_Point == "/vendor_image") {
+			Display_Name = "Vendor Image";
+			Backup_Display_Name = Display_Name;
+			Can_Flash_Img = false;
+			Can_Be_Backed_Up = true;
 		}
 	}