gmzpu: connect dat_i from zwc to zpu mem_write.
Add gmzpu to zpu-gcc options, fix gmzpu_io.h
roms: print zwc config and status reg in int_test.c
sim: Include waveform display config from seperate wave_gmzpu.do
phi: Drive gpio_out to 0 on reset.
roms: add new int_test with zwc hexdump
zwc: eliminate superfluous type conversion
sim: Ignore sim/wave.do
phi: silence uart status read transcript