CONFIG_HAVE_STD_PC_SERIAL_PORT is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
default or selected kernelversion does not have config value CONFIG_HAVE_STD_PC_SERIAL_PORT.
Result is shown for kernelversion 6.9.9

CONFIG_HAVE_STD_PC_SERIAL_PORT (not configurable)

modulename: 8250-platform.ko

configname: CONFIG_HAVE_STD_PC_SERIAL_PORT

Linux Kernel Configuration
└─>HAVE_STD_PC_SERIAL_PORT
In linux kernel since version 2.6.12  
source code:
arch/mips/kernel/8250-platform.c