Enable GGL as the default kernel launch method

Change-Id: I8022d126ee28ff7e4d9a96209e399d4243d39d8b

include/hip/hcc_detail/hip_runtime_api.h

@@ -32,7 +32,7 @@ THE SOFTWARE.
 #include <iostream>
 
 #ifndef GENERIC_GRID_LAUNCH
-#define GENERIC_GRID_LAUNCH 0
+#define GENERIC_GRID_LAUNCH 1 
 #endif
 
 #include <hip/hcc_detail/host_defines.h>

include/hip/hcc_detail/host_defines.h

@@ -32,7 +32,7 @@ THE SOFTWARE.
 
 // Add guard to Generic Grid Launch method
 #ifndef GENERIC_GRID_LAUNCH
-#define GENERIC_GRID_LAUNCH 0
+#define GENERIC_GRID_LAUNCH 1 
 #endif
 
 #ifdef __HCC__