Gaurav-Aggarwal-AWS 676d99e302
Use configSYSTICK_CLOCK_HZ to configure SysTick ()
configSYSTICK_CLOCK_HZ should be used to configure SysTick to support
the use case when the clock for SysTick timer is scaled from the main
CPU clock.

configSYSTICK_CLOCK_HZ is defined to configCPU_CLOCK_HZ when it is not
defined in FreeRTOSConfig.h.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
..
non_secure Use configSYSTICK_CLOCK_HZ to configure SysTick ()
secure Style: uncrustify kernel files