mark the old jit tests as unsupported for powerpc64 (for cmake)

mark the old JIT tests as unsupported for powerpc64 - CMake style.
This follows the style used for hexagon/arm64/aarch64.
The equivalent tests still run under the supported MCJIT/*



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211111 91177308-0d34-0410-b5e6-96231b3b80d8

test/ExecutionEngine/lit.local.cfg

@@ -2,6 +2,9 @@ if config.root.host_arch in ['PowerPC', 'AArch64', 'SystemZ']:
     config.unsupported = True
 
 # CMake and autoconf diverge in naming or host_arch
+if 'powerpc64' in config.root.target_triple:
+    config.unsupported = True
+
 if 'aarch64' in config.root.target_triple \
     or 'arm64' in config.root.target_triple:
         config.unsupported = True