[compiler-rt] [Fuzzer] Fix tests linking buildbot failure (#144495)

Fix for #144495 by 6f4add3 broke sanitizer-aarch64-linux buildbot.

compiler-rt/lib/fuzzer/tests build failed because the linker was
looking gcc_s without '-l' appended.

The CMake script was adding the library name without the required
'-l' prefix. This patch adds the -l prefix changing gcc_s to -lgcc_s
and gcc to -lgcc.

https://lab.llvm.org/buildbot/#/builders/51/builds/18170

GitOrigin-RevId: 7b6963ea672f8fedbbaefd15eaca943495709d37
1 file changed