The buck variable is zero based, i.e. buck=0 match BUCK1 in datasheet.
Remove any buck + 1 calculation to be more consistent in usage of the
buck variable across the different RK8xx variants in the driver.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
7210de40a2