[ELF][test] Update znotext-plt-relocations.s to emit R_X86_64_PC32
[ELF][test] Update znotext-plt-relocations.s to emit R_X86_64_PC32

This is a leftover from r325379.

The intention of this test was to check in a non-pic link, R_X86_64_PC32
to a STT_FUNC created a PLT. However, after the llvm-mc change in
r325569, this code path is no longer exercised. Use the r325379 trick to
keep testing R_X86_64_PC32.

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@362095 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld