[X86] Fix a typo in Host.cpp that causes us to misidentify KNL, Silvermont, Goldmont and probably other CPUs for -march=native

I think most of the Intel Core CPUs and recent AMD CPUs are unaffected. All the CPUs that have a "subtype" should work. The ones that were broken are the ones that are a "type" with no subtypes.

Fixes PR36619.

llvm-svn: 326840
diff --git a/llvm/lib/Support/Host.cpp b/llvm/lib/Support/Host.cpp
index 7945aa5..0f3be40 100644
--- a/llvm/lib/Support/Host.cpp
+++ b/llvm/lib/Support/Host.cpp
@@ -1009,7 +1009,7 @@
 #include "llvm/Support/X86TargetParser.def"
 
   // Now check types.
-#define X86_CPU_SUBTYPE(ARCHNAME, ENUM) \
+#define X86_CPU_TYPE(ARCHNAME, ENUM) \
   if (Type == X86::ENUM) \
     return ARCHNAME;
 #include "llvm/Support/X86TargetParser.def"