media: rzg2l-cru: csi2: Introduce SoC-specific D-PHY handling

In preparation for adding support for the RZ/V2H(P) SoC, where the D-PHY
differs from the existing RZ/G2L implementation, introduce a new
rzg2l_csi2_info structure. This structure provides function pointers for
SoC-specific D-PHY enable and disable operations.

Modify rzg2l_csi2_dphy_setting() to use these function pointers instead of
calling rzg2l_csi2_dphy_enable() and rzg2l_csi2_dphy_disable() directly.
Update the device match table to store the appropriate function pointers
for each compatible SoC.

This change prepares the driver for future extensions without affecting
the current functionality for RZ/G2L.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://lore.kernel.org/r/20250411170624.472257-9-tommaso.merciai.xr@bp.renesas.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

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