phy: phy-rockchip-samsung-hdptx: annotate regmap register-callback

The variant of the driver in the vendor-tree contained those handy
comments in the regmap register callback. Having the different ranges
describe what they are looks helpful.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Reviewed-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20241206103401.1780416-2-heiko@sntech.de


Signed-off-by: Vinod Koul <vkoul@kernel.org>