Updated glGetProgramBinary and glProgramBinary in order to properly
reflect that SwiftShader doesn't support any binary format.

Fixes dEQP-GLES3.functional.negative_api.shader.get_program_binary

Change-Id: I068ce7eb7ce824719cecca2fdc651a9e6c14190c
Reviewed-on: https://swiftshader-review.googlesource.com/15330Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>