misc: k3_avs: Check validity of efuse voltage data

misc: k3_avs: Check validity of efuse voltage data

k3_avs driver checks opp_ids when probing and overwrites the voltage
values in vd_data for the respective board. The new k3_avs_check_opp()
can be called from board files to check the efuse data and returns 0 if
valid.

Also add the same check in k3_avs_program_voltage() to error out if
the efuse data was not valid.

Signed-off-by: Reid Tonking <reidt@ti.com>
Signed-off-by: Aniket Limaye <a-limaye@ti.com>
Reviewed-by: Manorit Chawdhry <m-chawdhry@ti.com>