cpuidle: intel_idle: Update intel_idle() kerneldoc comment

mainline inclusion
from mainline-v5.18-rc1
commit a335b1e6
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I5BECY


CVE: NA

Intel-SIG: commit a335b1e6 cpuidle: intel_idle: Update intel_idle()
kerneldoc comment.
Backport intel_idle driver

--------------------------------

Commit bf9282dc ("cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic")
moved the leave_mm() call away from intel_idle(), but it didn't update
its kerneldoc comment accordingly, so do that now.

Fixes: bf9282dc ("cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic")

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: yingbao jia <yingbao.jia@intel.com>
Signed-off-by: Jun Tian <jun.j.tian@intel.com>