Resolving: unused variable 'mode' [-Wunused-variable]. mode is used to determine kMCG_ModePEE in case of PEE to switch back manually as default after wakeup MCG is in PBE mode. this is required only when PEE mode is required

Author: Deepika

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/api/sleep.c

@@ -28,8 +28,11 @@ void hal_sleep(void)
 void hal_deepsleep(void)
 {
 #if (defined(FSL_FEATURE_SOC_MCG_COUNT) && FSL_FEATURE_SOC_MCG_COUNT)
+#if defined(kMCG_ModePEE)
     mcg_mode_t mode = CLOCK_GetMode();
 #endif
+#endif
+
     SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
 
     SMC_SetPowerModeVlps(SMC);