EGL does not and should not depend on LLVM.

Change-Id: I36ef1d67e67cdf7625ca8c1a6f1bf3214c39ee4c
Reviewed-on: https://swiftshader-review.googlesource.com/9611Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>