Merge "drivers: qcom: system_pm: Set infinite sleep if sleep time is 0" into msm-4.9

	 * Set up the wake up value offset from the current time.

	 * Convert us to ns to allow div by 19.2 Mhz tick timer.

	 */

	if (sleep_val) {

		sleep_val *= NSEC_PER_USEC;

		do_div(sleep_val, NSEC_PER_SEC/ARCH_TIMER_HZ);

		sleep_val += arch_counter_get_cntvct();

	} else {

		sleep_val = ~0ULL;

	}

	return setup_wakeup(sleep_val);

}