Move dwarfdump test to DebugInfo/X86 now that it looks for x86 register names

Otherwise this test will fail on bots (like the hexagon bot) that don't
enable the x86 backend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312050 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/DebugInfo/dwarfdump-debug-loc-simple.test b/test/DebugInfo/X86/dwarfdump-debug-loc-simple.test
similarity index 100%
rename from test/DebugInfo/dwarfdump-debug-loc-simple.test
rename to test/DebugInfo/X86/dwarfdump-debug-loc-simple.test