freedreno/a3xx: fix depth/stencil restore format
freedreno/a3xx: fix depth/stencil restore format

Also fix z16 restore format which was completely wrong.

Signed-off-by: Rob Clark <6f78cdb10adbe0a7fbbf4098125a51f401c77a5f@freedesktop.org>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler