Remove unnecessary semicolon to silence -Wpedantic warning. NFCI.

llvm-svn: 341303
diff --git a/llvm/lib/Target/AMDGPU/AMDGPU.h b/llvm/lib/Target/AMDGPU/AMDGPU.h
index 1483540..beef85a 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPU.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPU.h
@@ -267,6 +267,6 @@
     // Some places use this if the address space can't be determined.
     UNKNOWN_ADDRESS_SPACE = ~0u,
   };
-};
+}
 
 #endif