The use of std::numeric_limits requires "#include <limits>" on Linux

Change-Id: I56b09e0e551a4f898406073d2d0f11b4dcc1fed5
Reviewed-on: https://swiftshader-review.googlesource.com/5464Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>