Allow pullup/downs on power loss pin (MarlinFirmware#14986)

Author: timmmoore

Marlin/Configuration_adv.h

@@ -935,6 +935,7 @@
   #if ENABLED(POWER_LOSS_RECOVERY)
     //#define POWER_LOSS_PIN         44 // Pin to detect power loss
     //#define POWER_LOSS_STATE     HIGH // State of pin indicating power loss
+    //#define POWER_LOSS_PULL           // Set pullup / pulldown as appropriate
     //#define POWER_LOSS_PURGE_LEN   20 // (mm) Length of filament to purge on resume
     //#define POWER_LOSS_RETRACT_LEN 10 // (mm) Length of filament to retract on fail. Requires backup power.
 

Marlin/src/Marlin.cpp

@@ -886,6 +886,10 @@ void setup() {
     runout.setup();
   #endif
 
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    recovery.setup();
+  #endif
+
   setup_killpin();
 
   #if HAS_TMC220x