default or selected kernelversion does not have config value CONFIG_V850E_UART.
Result is shown for kernelversion 5.19-rc1
NEC V850E on-chip UART support
modulename: v850e_uart.ko
configname: CONFIG_V850E_UART
Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>NEC V850E on-chip UART support