[lldb][test] explicit-member-function-quals.cpp: add -glldb

This will get un-XFAILed but requires `-glldb` in an upcoming patch.

Author: Michael137

lldb/test/Shell/SymbolFile/DWARF/x86/explicit-member-function-quals.cpp

@@ -3,7 +3,7 @@
 // Tests that we correctly deduce the CV-quals and storage
 // class of explicit object member functions.
 //
-// RUN: %clangxx_host %s -target x86_64-pc-linux -g -std=c++23 -c -o %t
+// RUN: %clangxx_host %s -glldb -target x86_64-pc-linux -g -std=c++23 -c -o %t
 // RUN: %lldb %t -b -o "type lookup Foo" 2>&1 | FileCheck %s
 //
 // CHECK:      (lldb) type lookup Foo