ROCm: Add trailing comma for consistency in gfx architecture list (pytorch#150250)

Adding trailing comma for consistency.

Pull Request resolved: pytorch#150250
Approved by: https://github.com/petrex, https://github.com/jeffdaily, https://github.com/cyyever

Author: jagadish-amd

aten/src/ATen/Context.cpp

@@ -359,7 +359,7 @@ at::BlasBackend Context::blasPreferredBackend() {
       static const std::vector<std::string> archs = {
           "gfx90a", "gfx942",
 #if ROCM_VERSION >= 60300
-          "gfx1100", "gfx1101", "gfx1200", "gfx1201"
+          "gfx1100", "gfx1101", "gfx1200", "gfx1201",
 #endif
 #if ROCM_VERSION >= 60500
           "gfx950"

aten/src/ATen/native/cuda/Blas.cpp

@@ -268,7 +268,7 @@ static bool isSupportedHipLtROCmArch(int index) {
     static const std::vector<std::string> archs = {
         "gfx90a", "gfx942",
 #if ROCM_VERSION >= 60300
-        "gfx1100", "gfx1101", "gfx1200", "gfx1201"
+        "gfx1100", "gfx1101", "gfx1200", "gfx1201",
 #endif
 #if ROCM_VERSION >= 60500
         "gfx950"
@@ -935,7 +935,7 @@ static bool _scaled_mm_allowed_device() {
     static const std::vector<std::string> archs = {
         "gfx942",
 #if ROCM_VERSION >= 60300
-        "gfx1200", "gfx1201"
+        "gfx1200", "gfx1201",
 #endif
 #if ROCM_VERSION >= 60500
         "gfx950"