pan/midgard: Use more aggressive writeout criteria

pan/midgard: Use more aggressive writeout criteria

We loosen the requirement of "no dependencies" to simply be "no
non-pipelined dependencies", so we check for what could be pipelined.

total bundles in shared programs: 2176 -> 2156 (-0.92%)
bundles in affected programs: 779 -> 759 (-2.57%)
helped: 20
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.33% max: 20.00% x̄: 6.47% x̃: 2.78%
95% mean confidence interval for bundles value: -1.00 -1.00
95% mean confidence interval for bundles %-change: -9.44% -3.50%
Bundles are helped.

total quadwords in shared programs: 3605 -> 3585 (-0.55%)
quadwords in affected programs: 1391 -> 1371 (-1.44%)
helped: 20
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.19% max: 14.29% x̄: 3.84% x̃: 1.64%
95% mean confidence interval for quadwords value: -1.00 -1.00
95% mean confidence interval for quadwords %-change: -5.73% -1.94%
Quadwords are helped.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>