hidpp20: store correct size for feature list
hidpp20: store correct size for feature list

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

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