Merge pull request #70 from open-telemetry/main

[BUILD] add loongarch info (open-telemetry#3052)

Author: malkia

CMakeLists.txt

@@ -77,6 +77,8 @@ else()
     set(ARCH s390x)
   elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(sparc.*|SPARC.*)")
     set(ARCH sparc)
+  elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(loongarch.*|LOONGARCH.*)")
+    set(ARCH loongarch)
   else()
     message(
       FATAL_ERROR