soc/tegra: pmc: Add kerneldoc for wake-up variables

Commit e6d9607 ("soc/tegra: pmc: Fix unsafe generic_handle_irq()
call") added the variables 'wake_work' and 'wake_status' to the
'tegra_pmc' structure but did not add the associated kerneldoc for these
new variables. Add the kerneldoc for these variables.

Fixes: e6d9607 ("soc/tegra: pmc: Fix unsafe generic_handle_irq() call")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Author: jonhunter

drivers/soc/tegra/pmc.c

@@ -439,6 +439,8 @@ struct tegra_pmc_soc {
  *     cntrl register associated with each wake during system suspend.
  * @reboot_notifier: PMC reboot notifier handler
  * @syscore: syscore suspend/resume callbacks
+ * @wake_work: IRQ work handler for processing wake-up events.
+ * @wake_status: Status of wake-up events.
  */
 struct tegra_pmc {
 	struct device *dev;