anv: Emit compute batch when changing from compute to 3d pipeline

Without doing this there is a geometry flickering in games which
use compute shaders - something goes wrong with binding tables
if there is MEDIA_INTERFACE_DESCRIPTOR_LOAD before 3d pipeline.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109630
          https://bugs.freedesktop.org/show_bug.cgi?id=109616
          https://bugs.freedesktop.org/show_bug.cgi?id=110295
Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
15 jobs for !621 with fix/anv-geometry-flickering in 13 minutes and 7 seconds (queued for 4 seconds)
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