Add XCore backend to CMake build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58843 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b44c7fd..4c01332 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@
     CACHE STRING "Semicolon-separated list of targets to build")
 else( MSVC )
   set(LLVM_TARGETS_TO_BUILD
-    Alpha ARM CBackend CellSPU CppBackend IA64 Mips MSIL PIC16 PowerPC Sparc X86
+    Alpha ARM CBackend CellSPU CppBackend IA64 Mips MSIL PIC16 PowerPC Sparc X86 XCore
     CACHE STRING "Semicolon-separated list of targets to build")
 endif( MSVC )