CONFIG_SBC8548 is not available for the selected architecture x86.
Result is shown for architecture powerpc
Wind River SBC8548
modulename: sbc8548.ko
configname: CONFIG_SBC8548
Linux Kernel Configuration
└─>Freescale Book-E Machine Type
└─>Wind River SBC8548
In linux kernel since version 2.6.25 (release Date: 2008-04-16)
This option enables support for the Wind River SBC8548 board