Optimized CSR stalls#917

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Silabs-ArjanB merged 5 commits intoopenhwgroup:masterfrom

silabs-oysteink:silabs-oysteink_CSR-stall-opt

Aug 28, 2023

Commits on Aug 23, 2023

Optimized CSR stalls.
silabs-oysteink
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Commits on Aug 24, 2023

Updated comments and removed no longer relevant assertion.
silabs-oysteink
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Commits on Aug 25, 2023

Renamed WB signals in csr_hz_t from "_ex" to "_wb". Added comments about stall signals being conservative i.e not factoring inn kill or halt.
silabs-oysteink
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Added comment in package file.
silabs-oysteink
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Commits on Aug 28, 2023

Updates after review.
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