CONFIG_M5373EVB is not available for thedefaultarchitecture x86.
Result is shown for architecture m68k
Freescale M5373EVB board support
configname: CONFIG_M5373EVB
Linux Kernel Configuration
└─>Freescale M5373EVB board support
In linux kernel since version 3.1 (release Date: 2011-10-24)
Support for the Freescale M5373EVB board.