[ibex_tracer] Use static variables in always/final blocks

[Razer6]

Without, this causes warnings in xcelium:

Local static variable with initializer requires 'static' keyword.

[rswarbrick]

Thanks for looking at this. I understand why it might be needed for the final block, but is it also needed for the always block? I'm a little surprised if this isn't considered an automatic variable?

[Razer6]

Thanks for looking at this. I understand why it might be needed for the final block, but is it also needed for the always block? I'm a little surprised if this isn't considered an automatic variable?

Xcelium warns exactly for these 3 locations.

[rswarbrick]

Huh, you're completely right! This is in the 1800 spec, section 6.21. And, thinking about it, it's kind of reasonable (and Xcelium is a bit silly to warn about this, I think).

Anyway, this looks good to me.