PM: sleep: Drop superfluous might_sleep() calls

PM: sleep: Drop superfluous might_sleep() calls

Drop superfluous might_sleep() calls from dpm_resume(), dpm_complete(),
and dpm_prepare(). These functions already invoke primitives that
implicitly check for sleep in atomic context:

 - dpm_resume() and dpm_complete() invoke mutex_lock(), which internally
   triggers might_sleep().

 - dpm_prepare() calls wait_for_device_probe(), which internally uses
   flush_work(), and thus might_sleep().

These annotations are unnecessary and can be dropped to reduce clutter.

Signed-off-by: Zhongqiu Han <quic_zhonhan@quicinc.com>
Link: https://patch.msgid.link/20250617084650.341262-1-quic_zhonhan@quicinc.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>