Fixed test case for GFX900

hipamd/tests/src/deviceLib/hipTestHalf.cpp

@@ -26,7 +26,7 @@ THE SOFTWARE.
 #define HALF_SIZE 64*sizeof(__half)
 #define HALF2_SIZE 64*sizeof(__half2)
 
-#if __HIP_ARCH_GFX803__ || __HIP_ARCH_GFX803__
+#if __HIP_ARCH_GFX803__ || __HIP_ARCH_GFX900__
 
 __global__ void __halfMath(hipLaunchParm lp, __half *A, __half *B, __half *C) {
   int tx = hipThreadIdx_x;