This "if" in arch/mips/config-shared.in breaks xconfig because there are
duplicate variables, such as CONFIG_RTC, which are used elsewhere. Why
does the DECSTATION RTC and SERIAL_CONSOLE selection have to be in this
file instead of selecting it from drivers/char/Config.in?
if [ "$CONFIG_DECSTATION" = "y" ]; then
comment 'DECStation Character devices'
tristate 'Standard/generic (dumb) serial support' CONFIG_SERIAL
dep_bool ' DZ11 Serial Support' CONFIG_DZ $CONFIG_SERIAL
dep_bool ' Z85C30 Serial Support' CONFIG_ZS $CONFIG_SERIAL
dep_bool ' Support for console on serial port' CONFIG_SERIAL_CONSOLE
# dep_bool 'MAXINE Access.Bus mouse (VSXXX-BB/GB) support'
bool 'Enhanced Real Time Clock Support' CONFIG_RTC