SPRG 0 to 3 are valid outside BookE, so move them to the normal test
file. Add support for accessing SPRG 4 to 7 on BookE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214295 91177308-0d34-0410-b5e6-96231b3b80d8