Use llvm-ss static lib in EGLlib.so

Change-Id: I4610a2a9e5e28b3ea3922eb0266ad26382041cb4
Reviewed-on: https://swiftshader-review.googlesource.com/3180
Reviewed-by: Nicolas Capens <capn@google.com>
Reviewed-by: Keun Soo Yim <yim@google.com>
Tested-by: Keun Soo Yim <yim@google.com>