define PORTSC_PFSC bit for Teensy 4.0

https://forum.pjrc.com/threads/59338?p=228516&viewfull=1#post228516

utility/imxrt_usbhs.h

@@ -58,6 +58,7 @@
 #define USBHS_USBINTR_UPIE	USB_USBINTR_UPIE
 #define USBHS_USBINTR_UAIE	USB_USBINTR_UAIE
 
+#define USBHS_PORTSC_PFSC	USB_PORTSC1_PFSC
 #define USBHS_PORTSC_PP		USB_PORTSC1_PP
 #define USBHS_PORTSC_OCC	USB_PORTSC1_OCC
 #define USBHS_PORTSC_PEC	USB_PORTSC1_PEC