CONFIG_OMAP_DM_TIMER is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Use dual-mode timer

modulename: dmtimer.ko

configname: CONFIG_OMAP_DM_TIMER

Linux Kernel Configuration
└─>TI OMAP Implementations
└─>Use dual-mode timer
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Select this option if you want to use OMAP Dual-Mode timers.

source code: