[console] Fix unreachable characters in "il" keymap

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/hci/keymap/keymap_il.c

@@ -31,6 +31,7 @@ static struct keymap_key il_basic[] = {
 
 /** "il" AltGr remapping */
 static struct keymap_key il_altgr[] = {
+	{ 0x5c, 0x60 },	/* '\\' => '`' */
 	{ 0, 0 }
 };
 

src/util/genkeymap.py

@@ -176,6 +176,12 @@ class KeyLayout(UserDict[KeyModifiers, Sequence[Key]]):
             # Treat Ctrl-Backspace as producing Backspace rather than Ctrl-H
             KeyModifiers.CTRL: [(KEY_BACKSPACE, 0x7f)],
         },
+        'il': {
+            # Redefine some otherwise unreachable ASCII characters
+            # using the closest available approximation
+            KeyModifiers.ALTGR: [(0x28, ord('\'')), (0x2b, ord('`')),
+                                 (0x35, ord('/'))],
+        },
     }
     """Fixups for erroneous keymappings produced by 'loadkeys -b'"""