freedreno/ir3: don't pass consts to madsh.m16 in MOD logic
madsh.m16 can't handle a const in src1, make sure to unconst it Signed-off-by:Ilia Mirkin <imirkin@alum.mit.edu> Reviewed-by:
Rob Clark <robdclark@gmail.com> Cc: "10.3 10.4" <mesa-stable@lists.freedesktop.org> (cherry picked from commit 37fe3475)