freedreno/a2xx: fix comparison out of range warnings
freedreno/a2xx: fix comparison out of range warnings

Signed-off-by: Francesco Ansanelli <f3ec32fd3aa0a87128e678e8ea5c05f63daed89b@gmail.com>
Signed-off-by: Rob Clark <915c10c999604870200b6defbe633d857c856ca0@gmail.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler