CONFIG_ARCH_LPC32XX_UART6_SELECT is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_LPC32XX_UART6_SELECT.
Result is shown for kernelversion 5.6.17

Add support for standard UART6


Linux Kernel Configuration
└─> Individual UART enable selections
└─> Add support for standard UART6

Adds support for standard UART 6 when the 8250 serial support
is enabled.