radv: run nir_opt_move_load_ubo

radv: run nir_opt_move_load_ubo

Polaris10:
SGPRS: 108560 -> 107856 (-0.65 %)
VGPRS: 74576 -> 74520 (-0.08 %)
Spilled SGPRs: 7375 -> 7113 (-3.55 %)
Code Size: 4273464 -> 4274364 (0.02 %) bytes
Max Waves: 9434 -> 9446 (0.13 %)

Vega10:
Totals from affected shaders:
SGPRS: 108264 -> 107576 (-0.64 %)
VGPRS: 69068 -> 69000 (-0.10 %)
Spilled SGPRs: 7221 -> 6959 (-3.63 %)
Code Size: 3800796 -> 3801496 (0.02 %) bytes
Max Waves: 10687 -> 10709 (0.21 %)

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>