i965: define I915_PARAM_REVISION
i965: define I915_PARAM_REVISION

we are broken against the libdrm 2.4.60 minimum specified,
so fix it for now.

Signed-off-by: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@redhat.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler