ynl: support hex display_hint for integer

Some times it would be convenient to read the integer as hex, like
mask values.

Suggested-by: Donald Hunter <[email protected]>
Reviewed-by: Donald Hunter <[email protected]>
Signed-off-by: Hangbin Liu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: liuhangbin

tools/net/ynl/lib/ynl.py

@@ -819,7 +819,10 @@ def _formatted_string(self, raw, display_hint):
         if display_hint == 'mac':
             formatted = ':'.join('%02x' % b for b in raw)
         elif display_hint == 'hex':
-            formatted = bytes.hex(raw, ' ')
+            if isinstance(raw, int):
+                formatted = hex(raw)
+            else:
+                formatted = bytes.hex(raw, ' ')
         elif display_hint in [ 'ipv4', 'ipv6' ]:
             formatted = format(ipaddress.ip_address(raw))
         elif display_hint == 'uuid':