[llvm] [offload] Fix CUDA args size by subtracting tail padding (PR #172249)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- offload/plugins-nextgen/cuda/dynamic_cuda/cuda.cpp offload/plugins-nextgen/cuda/dynamic_cuda/cuda.h offload/plugins-nextgen/cuda/src/rtl.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/offload/plugins-nextgen/cuda/src/rtl.cpp b/offload/plugins-nextgen/cuda/src/rtl.cpp
index 6ac482556..a60c3ca03 100644
--- a/offload/plugins-nextgen/cuda/src/rtl.cpp
+++ b/offload/plugins-nextgen/cuda/src/rtl.cpp
@@ -181,7 +181,8 @@ private:
     size_t Arg = 0;
 
     // Find the last argument to know the total size of the arguments.
-    while ((Res = cuFuncGetParamInfo(Func, Arg++, &ArgOffset, &ArgSize)) == CUDA_SUCCESS)
+    while ((Res = cuFuncGetParamInfo(Func, Arg++, &ArgOffset, &ArgSize)) ==
+           CUDA_SUCCESS)
       ArgsSize = ArgOffset + ArgSize;
 
     if (Res != CUDA_ERROR_INVALID_VALUE)
@@ -1452,7 +1453,8 @@ Error CUDAKernelTy::launchImpl(GenericDeviceTy &GenericDevice,
   // The args size passed in LaunchParams may have tail padding, which is not
   // accepted by the CUDA driver.
   if (ArgsSize > LaunchParams.Size)
-    return Plugin::error(ErrorCode::INVALID_BINARY, "mismatch in kernel arguments");
+    return Plugin::error(ErrorCode::INVALID_BINARY,
+                         "mismatch in kernel arguments");
 
   CUstream Stream;
   if (auto Err = CUDADevice.getStream(AsyncInfoWrapper, Stream))

``````````

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https://github.com/llvm/llvm-project/pull/172249