DoxyGen: Enhanced description of osKernelGetSysTimerCount (#693)
DoxyGen: Enhanced description of osKernelGetSysTimerCount (#693)

Change-Id: I0081e8971aeeef5bd37d1bb744471f75f11e77e8

ARM-software/CMSIS_5,JonatanAntoni/CMSIS_5,JonatanAntoni/CMSIS_5,ARM-software/CMSIS_5,ARM-software/CMSIS_5,ARM-software/CMSIS_5,JonatanAntoni/CMSIS_5,JonatanAntoni/CMSIS_5,JonatanAntoni/CMSIS_5,ARM-software/CMSIS_5,JonatanAntoni/CMSIS_5,ARM-software/CMSIS_5