[LLDB][NVIDIA] Add NVPTX architecture support (#158334)

- Introduced a new method `IsNVPTX()` in `ArchSpec` to check for NVPTX
architecture.
- Implemented the corresponding method in `ArchSpec.cpp` to utilize the
existing triple architecture checks.

Author: agontarek

lldb/include/lldb/Utility/ArchSpec.h

@@ -327,6 +327,11 @@ class ArchSpec {
   ///  \return a boolean value.
   bool IsMIPS() const;
 
+  /// If NVPTX architecture return true.
+  ///
+  ///  \return a boolean value.
+  bool IsNVPTX() const;
+
   /// Returns a string representing current architecture as a target CPU for
   /// tools like compiler, disassembler etc.
   ///

lldb/source/Utility/ArchSpec.cpp

@@ -545,6 +545,8 @@ const char *ArchSpec::GetArchitectureName() const {
 
 bool ArchSpec::IsMIPS() const { return GetTriple().isMIPS(); }
 
+bool ArchSpec::IsNVPTX() const { return GetTriple().isNVPTX(); }
+
 std::string ArchSpec::GetTargetABI() const {
 
   std::string abi;