CONFIG_DEBUG_IMX50_UART is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
i.MX50 Debug UART
configname: CONFIG_DEBUG_IMX50_UART
Kernel low-level debugging port
└─>i.MX50 Debug UART
In linux kernel since version 3.14 (release Date: 2014-03-30)
Say Y here if you want kernel low-level debugging support
on i.MX50.
on i.MX50.