program: add ATI_fragment_shader to shader stages list
program: add ATI_fragment_shader to shader stages list

Signed-off-by: Miklós Máté <15d0862fd37e873c09c368d26c45bf2db0f823cd@gmail.com>
Signed-off-by: Marek Olšák <8c7344a1abdb103e79ecfd488098373070c3c70e@amd.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler