143f3bb008
- add rmixl_eirr_ack() to ack the EIRR, using COP0_SYNC & JR_HB_RA as needed - in rmixl_cpu_trampoline, remove old KSEG0 address reconstruction of trampoline args pointer, and comment/explain the new way - also in rmixl_cpu_trampoline, remove old watchpoint hack used for debugging