[llvm-readobj] Weaken a check in the test added by r354567

The check includes a substring, configurable by PACKAGE_NAME in CMake.
This leads to failures if PACKAGE_NAME is not the default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354586 91177308-0d34-0410-b5e6-96231b3b80d8

test/tools/llvm-readobj/basic.test

@@ -28,7 +28,9 @@ UNKNOWN: Unknown command line argument '--unknown-switch'
 # Test version switch.
 RUN: llvm-readobj --version | FileCheck %s --check-prefix=VERSION
 RUN: llvm-readelf --version | FileCheck %s --check-prefix=VERSION
-VERSION: LLVM version
+# In default configuration we could match "LLVM version", but the "LLVM" part
+# can be changed with PACKAGE_NAME in CMake, so we match only version.
+VERSION: version
 
 # Test help switch.
 RUN: llvm-readobj --help | FileCheck %s --check-prefixes=HELP,USAGE-OBJ