ledger: support hiding outputs on 'receive' branch

so if change is on the 'receive' branch, user won't be prompted to confirm it

plugins/keepkey/keepkey.py

@@ -15,6 +15,7 @@ from electrum.wallet import Standard_Wallet
 from electrum.base_wizard import ScriptTypeNotSupported
 
 from ..hw_wallet import HW_PluginBase
+from ..hw_wallet.plugin import is_any_tx_output_on_change_branch
 
 
 # TREZOR initialization methods
@@ -393,18 +394,9 @@ class KeepKeyPlugin(HW_PluginBase):
                 txoutputtype.address = address
             return txoutputtype
 
-        def is_any_output_on_change_branch():
-            for _type, address, amount in tx.outputs():
-                info = tx.output_info.get(address)
-                if info is not None:
-                    index, xpubs, m = info
-                    if index[0] == 1:
-                        return True
-            return False
-
         outputs = []
         has_change = False
-        any_output_on_change_branch = is_any_output_on_change_branch()
+        any_output_on_change_branch = is_any_tx_output_on_change_branch(tx)
 
         for _type, address, amount in tx.outputs():
             use_create_by_derivation = False