Apply .clangformat to all repo source files

Change-Id: I7e79c6058f0303f9a98911e3b7dd2e8596079344

samples/1_Utils/hipCommander/nullkernel.hip.cpp

@@ -1,6 +1,6 @@
 #include "hip/hip_runtime.h"
 
-extern "C" __global__ void NullKernel(hipLaunchParm lp, float* Ad){
+extern "C" __global__ void NullKernel(hipLaunchParm lp, float* Ad) {
     if (Ad) {
         Ad[0] = 42;
     }