Address wake from sleep instability (#11450)

* resolve race condition between suspend and wake in LUFA

* avoid multiple calls to suspend_power_down() / suspend_wakeup_init()

* Remove duplicate suspend_power_down_kb() call

* pause on wakeup to wait for USB state to settle

* need the repeated suspend_power_down() (that's where the sleep is)

* more efficient implementation

* fine tune the pause after sending wakeup

* speculative chibios version of pause-after-wake

* make wakeup delay configurable, and adjust value

* better location for wakeup delay

tmk_core/common/avr/suspend.c

@@ -110,7 +110,6 @@ static void power_down(uint8_t wdto) {
         rgblight_disable_noeeprom();
     }
 #    endif
-    suspend_power_down_kb();
 
     // TODO: more power saving
     // See PicoPower application note

tmk_core/common/suspend.h

@@ -12,3 +12,7 @@ void suspend_wakeup_init_user(void);
 void suspend_wakeup_init_kb(void);
 void suspend_power_down_user(void);
 void suspend_power_down_kb(void);
+
+#ifndef USB_SUSPEND_WAKEUP_DELAY
+#    define USB_SUSPEND_WAKEUP_DELAY 200
+#endif