Added support for hipCtxSynchronize and hipCtxGetFlags,modified hipDeviceSynchronize

Change-Id: If7bac667a262fa8c0cb3dc93e97f2534855acd07

src/hip_context.cpp

@@ -216,4 +216,18 @@ hipError_t hipCtxGetSharedMemConfig ( hipSharedMemConfig * pConfig )
     *pConfig = hipSharedMemBankSizeFourByte;
 
     return ihipLogStatus(hipSuccess);
-}
+}
+
+hipError_t hipCtxSynchronize ( void )
+{
+    return ihipSynchronize(); //TODP Shall check validity of ctx?
+}
+
+hipError_t hipCtxGetFlags ( unsigned int* flags )
+{
+    hipError_t e = hipSuccess;
+    ihipCtx_t* tempCtx;
+    tempCtx = ihipGetTlsDefaultCtx();
+    *flags = tempCtx->_ctxFlags;
+    return ihipLogStatus(e);
+}