ptp: ocp: expose config and temperature for ART card

Orolia card has disciplining configuration and temperature table
stored in EEPROM. This patch exposes them as binary attributes to
have read and write access.

Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Co-developed-by: Charles Parent <charles.parent@orolia2s.com>
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Vadim Fedorenko <vadfed@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>