HID: intel-ish-hid: Fix !CONFIG_PM build warning

HID: intel-ish-hid: Fix !CONFIG_PM build warning

Fix

  drivers/hid/intel-ish-hid/ipc/pci-ish.c:247:12: warning: ‘ish_suspend’ defined but not used [-Wunused-function]
   static int ish_suspend(struct device *device)
              ^
  drivers/hid/intel-ish-hid/ipc/pci-ish.c:282:12: warning: ‘ish_resume’ defined but not used [-Wunused-function]
   static int ish_resume(struct device *device)
            ^
by sticking them in the CONFIG_PM range too.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Wei Yongjun <weiyongjun1@huawei.com>
Cc: linux-input@vger.kernel.org
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>