Fix shutdown mode function declaration for MAX32662 LP

Shutdown function is defined as MXC_LP_EnterShutDownMode in lp.h however
is implemented as MXC_LP_EnterPowerDownMode. Change its name in
lp_me12.c to MXC_LP_EnterShutDownMode to make it consistent.

Signed-off-by: Tahsin Mutlugun <[email protected]>

Libraries/PeriphDrivers/Source/LP/lp_me12.c

@@ -58,7 +58,7 @@ void MXC_LP_EnterBackupMode(void)
     // Should never reach this line - device will jump to backup vector on exit from background mode.
 }
 
-void MXC_LP_EnterPowerDownMode(void)
+void MXC_LP_EnterShutDownMode(void)
 {
     MXC_GCR->pm &= ~MXC_F_GCR_PM_MODE;
     MXC_GCR->pm |= MXC_S_GCR_PM_MODE_SHUTDOWN;