test: Add initialization of TXT Buffer memories.

Now this is done in TB to avoid extra gating of TXT Buffer counter in
Protocol control. The reason is to avoid huge log overflow on arithmetic
comparisons on undefined values!
6 jobs for 306-synchronization-edge-by-time-quanta
Status Job ID Name Coverage
  Precheck
canceled #47159
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check_component

 
  Build
canceled #47162
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build_doc

canceled #47161
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build_driver

canceled #47160
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build_ip_and_tests

canceled #47163
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build_linux_driver

 
  Test
canceled #47164
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test_ip_fast