simplicity_sdk: Patch in sl_power_manager_hal_s2.c

Patch needed to fix a bug where the SLEEPDEEP bit is not cleared
properly after a wakeup from EM2.

Upstream-Status: Pending
Signed-off-by: Bastien Beauchamp <[email protected]>

Author: silabs-BastienB

simplicity_sdk/platform/service/power_manager/src/sleep_loop/sl_power_manager_hal_s2.c

@@ -615,6 +615,8 @@ void sli_power_manager_apply_em(sl_power_manager_em_t em)
     case SL_POWER_MANAGER_EM2:
     case SL_POWER_MANAGER_EM3:
       EMU_EnterEM2(false);
+      // Clear the SLEEPDEEP bit after sleep.
+      SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
       break;
 
     default: