glsl/lower_distance: only set max_array_access for 1D clip dist arrays

glsl/lower_distance: only set max_array_access for 1D clip dist arrays

The max_array_access field applies to the first dimension, which means
we only want to set it for the 1D clip dist arrays.

This fixes an ir_validate assert seen with
KHR-GL44.cull_distance.functional
on nouveau and radeon with debug builds.

Fixes: a08c4ebbe (glsl: rewrite clip/cull distance lowering pass)
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>