[CK][EXAMPLES] (#2826)

-Added parameter to enable/disable verification and timing of kernel in various examples that missed it.
-Added parameter to change number of groups to execute in grouped_gemm_examples.

Signed-off-by: Michal Kulikowski <Michal.Kulikowski@amd.com>

[ROCm/composable_kernel commit: ffe9775e70]

example/45_elementwise_normalization/elementwise_layernorm_blockwise.cpp

@@ -77,9 +77,26 @@ void host_elementwise2D(HostTensorC& C,
         }
 }
 
-int main()
+int main(int argc, char* argv[])
 {
-    bool time_kernel = true;
+    bool do_verification = true;
+    bool time_kernel     = true;
+
+    if(argc == 1)
+    {
+        // use default
+    }
+    else if(argc == 3)
+    {
+        do_verification = std::stoi(argv[1]);
+        time_kernel     = std::stoi(argv[2]);
+    }
+    else
+    {
+        printf("arg1: verification (0=no, 1=yes)\n");
+        printf("arg2: time kernel (0=no, 1=yes)\n");
+        exit(0);
+    }
 
     ck::index_t M      = 48 * 256;
     ck::index_t N      = 1024;
@@ -157,6 +174,7 @@ int main()
     std::cout << "Time elapase is : " << ela_time << " ms . " << std::endl;
 
     bool pass = true;
+    if(do_verification)
     {
         std::vector<std::size_t> mn = {static_cast<unsigned long>(M),
                                        static_cast<unsigned long>(N)};