logd: use ro.debuggable instead of ro.build.type

Change-Id: Ic644f1f78e68094f700834675f4acc63386a6b92
diff --git a/logd/main.cpp b/logd/main.cpp
index 9cec313..bef40c7 100644
--- a/logd/main.cpp
+++ b/logd/main.cpp
@@ -202,8 +202,8 @@
         return false;
     }
     if (flag & BOOL_DEFAULT_FLAG_ENG) {
-        property_get("ro.build.type", property, "");
-        if (!strcmp(property, "user")) {
+        property_get("ro.debuggable", property, "");
+        if (strcmp(property, "1")) {
             return false;
         }
     }