dt-bindings: power: rpmpd: Fix comment for SM6375

During an earlier commit, the comment from SM6350 was copied without
modifying. Adjust the comment to reflect the defines.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20241202-rpmpd-sm6375-v1-1-12a4f0182133@fairphone.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>