[rtl] Fix icache xprop issue
[rtl] Fix icache xprop issue

- invalidate all ways on a tag error to prevent xprop from the data
  error signal and reduce the likelyhood of multi-way allocations

Signed-off-by: Tom Roberts <f3b1a53ee1cbeb35a47033dea932030093853292@lowrisc.org>

lowRISC/ibex,lowRISC/ibex,AmbiML/ibex,AmbiML/ibex,lowRISC/ibex,AmbiML/ibex,AmbiML/ibex,lowRISC/ibex