Add adb enable-verity

Note that it is *easy* to break your phone with this feature. It is
not a bug that reenabling verity after changing one byte of the system
partition stops the device booting.

(cherry-pick of 7c442e1700e6312727283db402dec6f666f1b55a.)

Bug: 18529433
Change-Id: I632e91281884471a362960f1ba30312d2669b8ff
diff --git a/adb/services.c b/adb/services.c
index 1aeb376..d5a4642 100644
--- a/adb/services.c
+++ b/adb/services.c
@@ -472,7 +472,9 @@
             }
         }
     } else if(!strncmp(name, "disable-verity:", 15)) {
-        ret = create_service_thread(disable_verity_service, NULL);
+        ret = create_service_thread(set_verity_enabled_state_service, (void*)0);
+    } else if(!strncmp(name, "enable-verity:", 15)) {
+        ret = create_service_thread(set_verity_enabled_state_service, (void*)1);
 #endif
     }
     if (ret >= 0) {