potter: Allow vendor init to override props

Change-Id: I7494376e34f22bcb21157a2621e03647cb3d8c7b

init/init_potter.cpp

@@ -28,12 +28,25 @@
  */
 
 #include <stdlib.h>
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
 
 #include "vendor_init.h"
 #include "property_service.h"
 #include "log.h"
 #include "util.h"
 
+void property_override(char const prop[], char const value[])
+{
+    prop_info *pi;
+
+    pi = (prop_info*) __system_property_find(prop);
+    if (pi)
+        __system_property_update(pi, value, strlen(value));
+    else
+        __system_property_add(prop, strlen(prop), value, strlen(value));
+}
+
 void num_sims() {
     std::string dualsim;