Fix build issues after the merge

Change-Id: Ia856311187a0b2168cb859bd8b2300ff59df6569
diff --git a/libril/ril.cpp b/libril/ril.cpp
index 4aea484..052399e 100644
--- a/libril/ril.cpp
+++ b/libril/ril.cpp
@@ -303,10 +303,10 @@
 
 #ifdef RIL_SHLIB
 #if defined(ANDROID_MULTI_SIM)
-extern "C" void RIL_onUnsolicitedResponse(int unsolResponse, void *data,
+extern "C" void RIL_onUnsolicitedResponse(int unsolResponse, const void *data,
                                 size_t datalen, RIL_SOCKET_ID socket_id);
 #else
-extern "C" void RIL_onUnsolicitedResponse(int unsolResponse, void *data,
+extern "C" void RIL_onUnsolicitedResponse(int unsolResponse, const void *data,
                                 size_t datalen);
 #endif
 #endif