qcacmn: device ID and target type checks for ipq5018 target

Initial changes for ipq5018 compilation.
Added device ID and target type checks for ipq5018 traget.

Change-Id: Ib86a371fbe66749fcb6d114e7a4a9931b684e03d

hif/inc/hostdef.h

@@ -44,5 +44,6 @@ extern struct hostdef_s *IPQ4019_HOSTdef;
 extern struct hostdef_s *QCA8074_HOSTdef;
 extern struct hostdef_s *QCA8074V2_HOSTDEF;
 extern struct hostdef_s *QCA6018_HOSTDEF;
+extern struct hostdef_s *QCA5018_HOSTDEF;
 extern struct hostdef_s *QCN9000_HOSTDEF;
 #endif