[VE] Rename VE toolchain source files

Summary:
Rename VE.cpp and VE.h to VEToolchain.cpp and VEToolchain.h respectively
in order to avoid link warning message.  Linker warns that VE.cpp.o and
Arch/VE.cpp.o have the same name.

Reviewers: simoll, k-ishizaka

Reviewed By: simoll

Subscribers: mgorny, cfe-commits

Tags: #llvm, #ve, #clang

Differential Revision: https://reviews.llvm.org/D82968

clang/lib/Driver/CMakeLists.txt

@@ -68,7 +68,7 @@ add_clang_library(clangDriver
   ToolChains/RISCVToolchain.cpp
   ToolChains/Solaris.cpp
   ToolChains/TCE.cpp
-  ToolChains/VE.cpp
+  ToolChains/VEToolchain.cpp
   ToolChains/WebAssembly.cpp
   ToolChains/XCore.cpp
   ToolChains/PPCLinux.cpp

clang/lib/Driver/Driver.cpp

@@ -43,7 +43,7 @@
 #include "ToolChains/RISCVToolchain.h"
 #include "ToolChains/Solaris.h"
 #include "ToolChains/TCE.h"
-#include "ToolChains/VE.h"
+#include "ToolChains/VEToolchain.h"
 #include "ToolChains/WebAssembly.h"
 #include "ToolChains/XCore.h"
 #include "clang/Basic/Version.h"

clang/lib/Driver/ToolChains/VEToolchain.cpp

@@ -6,7 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "VE.h"
+#include "VEToolchain.h"
 #include "CommonArgs.h"
 #include "clang/Driver/Compilation.h"
 #include "clang/Driver/Driver.h"