hidpp20: fix last feature discovery
hidpp20: fix last feature discovery

Signed-off-by: Ogier Bouvier <3523d469c47711d91eb6e14be8e6a2b2e538db84@logitech.com>

whot/libratbag,whot/libratbag,libratbag/libratbag,libratbag/libratbag,whot/libratbag,libratbag/libratbag