Add reset states to axi_atop_filter to fix zero time sim hang #322
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Runny occamy simulations in xsim sometimes triggers 0 time simulation loops. One loop seems to be related to use of atop_filter and the massaging of ready/valid signals to downstream axi library IP which may also have combinational paths depending on their spill parameterization. This change introduces a reset state to the both the read and write state machines which seems to eliminate one of the zero time loops in occamy simulation with xsim.