esp32,esp8266: Allow Ctrl-C to interrupt the corrupt-fs while loop.

Commit c046b23ea29e0183c899a8dbe1da3bed3440a255 prevented frozen boot code
from being interrupted by Ctrl-C, but that means a corrupt filesystem will
forever lock up an esp32/esp8266 board.  This commit fixes that by
explicitly enabling Ctrl-C before running the forever loop.

Signed-off-by: Damien George <damien@micropython.org>

ports/esp32/modules/inisetup.py

@@ -17,6 +17,10 @@ def check_bootsec():
 
 def fs_corrupted():
     import time
+    import micropython
+
+    # Allow this loop to be stopped via Ctrl-C.
+    micropython.kbd_intr(3)
 
     while 1:
         print(

ports/esp8266/modules/inisetup.py

@@ -26,6 +26,10 @@ def check_bootsec():
 
 def fs_corrupted():
     import time
+    import micropython
+
+    # Allow this loop to be stopped via Ctrl-C.
+    micropython.kbd_intr(3)
 
     while 1:
         print(