[ARM] Add support for armv7ve triple in llvm (PR31358).

Gcc supports target armv7ve which is armv7-a with virtualization
extensions. This change adds support for this in llvm for gcc
compatibility.

Also remove redundant FeatureHWDiv, FeatureHWDivARM for a few models as
this is specified automatically by FeatureVirtualization.

Patch by Manoj Gupta.

Differential Revision: https://reviews.llvm.org/D29472

llvm-svn: 294661
diff --git a/llvm/lib/Support/Triple.cpp b/llvm/lib/Support/Triple.cpp
index 808c6dc..5c37dfc 100644
--- a/llvm/lib/Support/Triple.cpp
+++ b/llvm/lib/Support/Triple.cpp
@@ -551,6 +551,8 @@
   case ARM::AK_ARMV7A:
   case ARM::AK_ARMV7R:
     return Triple::ARMSubArch_v7;
+  case ARM::AK_ARMV7VE:
+    return Triple::ARMSubArch_v7ve;
   case ARM::AK_ARMV7K:
     return Triple::ARMSubArch_v7k;
   case ARM::AK_ARMV7M: