CONFIG_M68EZ328 is not available for thedefaultarchitecture x86.
Result is shown for architecture m68k

CONFIG_M68EZ328 (not configurable)

modulename: m68EZ328.ko

and/or

configname: CONFIG_M68EZ328

Linux Kernel Configuration
└─>M68EZ328
In linux kernel since version 2.6.12  
Motorola 68EX328 processor support.

selects
CONFIG_M68000


is selected by
CONFIG_FB_68328

is depended by
CONFIG_UCSIMM