Change drm/crypto service names to "default"

bug: 36371166

Test: vts drm hidl test

Change-Id: Iae98708c4f9b58dc697fb54c9f9b67d99e7ed0cf
diff --git a/drm/1.0/default/service.cpp b/drm/1.0/default/service.cpp
index a112aaf..823f39e 100644
--- a/drm/1.0/default/service.cpp
+++ b/drm/1.0/default/service.cpp
@@ -32,11 +32,11 @@
     ALOGD("android.hardware.drm@1.0-service starting...");
     configureRpcThreadpool(8, true /* callerWillJoin */);
     android::status_t status =
-        registerPassthroughServiceImplementation<IDrmFactory>("drm");
+        registerPassthroughServiceImplementation<IDrmFactory>();
     LOG_ALWAYS_FATAL_IF(
         status != android::OK,
         "Error while registering drm service: %d", status);
-    status = registerPassthroughServiceImplementation<ICryptoFactory>("crypto");
+    status = registerPassthroughServiceImplementation<ICryptoFactory>();
     LOG_ALWAYS_FATAL_IF(
         status != android::OK,
         "Error while registering crypto service: %d", status);