tests: skip the cpu_idle test for nsim_hs_smp
tests: skip the cpu_idle test for nsim_hs_smp

Because the sleep instruction issue for nsim_hs_smp, idle
loop is used to simulate behavior of sleep, so arch_cpu_idle will
forever loop. This causes cpu idle test loop, then the whole
context test timeouts.

as a fix, skip the cpu_idle test for nsim_hs_smp now.

Signed-off-by: Wayne Ren <d5c6d7c4aa45e53f819f17870783d153a32ba7d0@synopsys.com>

nashif/zephyr,Vudentz/zephyr,nashif/zephyr,galak/zephyr,nashif/zephyr,Vudentz/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,nashif/zephyr,Vudentz/zephyr