pan/midgard: Fix copypropagation for textures

pan/midgard: Fix copypropagation for textures

total instructions in shared programs: 3562 -> 3457 (-2.95%)
instructions in affected programs: 575 -> 470 (-18.26%)
helped: 16
HURT: 0
helped stats (abs) min: 1 max: 14 x̄: 6.56 x̃: 10
helped stats (rel) min: 5.71% max: 24.56% x̄: 16.83% x̃: 18.87%
95% mean confidence interval for instructions value: -9.07 -4.06
95% mean confidence interval for instructions %-change: -19.00% -14.66%
Instructions are helped.

total bundles in shared programs: 1846 -> 1830 (-0.87%)
bundles in affected programs: 338 -> 322 (-4.73%)
helped: 16
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 2.50% max: 20.00% x̄: 8.85% x̃: 3.33%
95% mean confidence interval for bundles value: -1.00 -1.00
95% mean confidence interval for bundles %-change: -13.02% -4.67%
Bundles are helped.

total quadwords in shared programs: 3191 -> 3144 (-1.47%)
quadwords in affected programs: 606 -> 559 (-7.76%)
helped: 16
HURT: 0
helped stats (abs) min: 1 max: 14 x̄: 2.94 x̃: 3
helped stats (rel) min: 5.17% max: 22.22% x̄: 11.20% x̃: 5.62%
95% mean confidence interval for quadwords value: -4.58 -1.29
95% mean confidence interval for quadwords %-change: -15.16% -7.24%
Quadwords are helped.

total registers in shared programs: 312 -> 303 (-2.88%)
registers in affected programs: 27 -> 18 (-33.33%)
helped: 9
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 33.33% max: 33.33% x̄: 33.33% x̃: 33.33%
95% mean confidence interval for registers value: -1.00 -1.00
95% mean confidence interval for registers %-change: -33.33% -33.33%
Registers are helped.

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