fixed compilation bugs

1. Texture functions are now compiling fine
2. Fixed hipFuncCache to hipFuncCache_t

Change-Id: I8f815887e4de43ee115bbaff249905b236541c39

hipamd/tests/src/test_common.h

@@ -24,6 +24,7 @@ THE SOFTWARE.
 
 #include "hip/hip_runtime.h"
 #include "hip/hip_texture.h"
+#include "hip/hip_runtime_api.h"
 
 #define HC __attribute__((hc))