zwc: fix zwishbone source file name in sim
sim: copy zwishbone_controller do to dont
sim: make zwishbone_controller test non-interactive
rom: add timer test rom
sim: gmzpu sim load zetaio before gmzpu
sim: reorder gmzpu sim waveform
sim: add basic read/write reg testcase to zwishbone_controller test
zwc: set wb_stb_o to 0's when idle