Use bitfield type in GNSS HAL.

Test: mma

Change-Id: I92acf537a489fb06d942d3aa19ec9f40ffe26c23
diff --git a/gnss/1.0/default/AGnssRil.cpp b/gnss/1.0/default/AGnssRil.cpp
index 87abad7..480571d 100644
--- a/gnss/1.0/default/AGnssRil.cpp
+++ b/gnss/1.0/default/AGnssRil.cpp
@@ -50,7 +50,7 @@
         return;
     }
 
-    sAGnssRilCbIface->requestSetIdCb(static_cast<IAGnssRilCallback::ID>(flags));
+    sAGnssRilCbIface->requestSetIdCb(flags);
 }
 
 void AGnssRil::requestRefLoc(uint32_t /*flags*/) {