806e09ad47
cn_tab->cn_dev is initialized in wsdisplay_emul_attach() (but not in wsdiaplay_cnattach()) so it cannot be used when hil(4) is attached before wsdisplay(4) is attached. Instead, use exported wsdisplay_cnputc() that is actually set in early wsdisplay_cnattach(). Now we can use ddb and RB_ASKNAME via HIL keyboard console. Should be pulleld up to netbsd-8 and netbsd-9.