docs: add INTEL_SHADER_ASM_READ_PATH description

It was implemented in
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/955

Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6895>
1 file changed