u2f: show generic icon if specific is not found

src/apps/fido_u2f/__init__.py

@@ -413,10 +413,13 @@ class ConfirmContent(ui.Widget):
             icon = ui.ICON_RESET  # TODO: warning icon
         elif app_id in knownapps.knownapps:
             name = knownapps.knownapps[app_id]
-            icon = res.load('apps/fido_u2f/res/u2f_%s.toif' % name.lower().replace(' ', '_'))
+            try:
+                icon = res.load('apps/fido_u2f/res/u2f_%s.toif' % name.lower().replace(' ', '_'))
+            except:
+                icon = res.load('apps/fido_u2f/res/u2f_generic.toif')
         else:
             name = '%s...%s' % (ubinascii.hexlify(app_id[:4]), ubinascii.hexlify(app_id[-4:]))
-            icon = res.load('apps/fido_u2f/res/u2f_unknown.toif')
+            icon = res.load('apps/fido_u2f/res/u2f_generic.toif')
         self.app_name = name
         self.app_icon = icon
 

src/apps/fido_u2f/knownapps.py

@@ -10,6 +10,7 @@ knownapps = {
     hashlib.sha256(b'https://gitlab.com').digest():                                    'GitLab',
     hashlib.sha256(b'https://keepersecurity.com').digest():                            'Keeper',
     hashlib.sha256(b'https://slushpool.com/static/security/u2f.json').digest():        'Slush Pool',
+    hashlib.sha256(b'https://u2f.bin.coffee').digest():                                'u2f.bin.coffee checker',
     hashlib.sha256(b'https://vault.bitwarden.com/app-id.json').digest():               'bitwarden',
     hashlib.sha256(b'https://www.bitfinex.com').digest():                              'Bitfinex',
     hashlib.sha256(b'https://www.dropbox.com/u2f-app-id.json').digest():               'Dropbox',