drm/bridge: analogix: Do not use device's drvdata

The driver that instantiates the bridge should own the drvdata, as all
driver model callbacks (probe, remove, shutdown, PM ops, etc.) are also
owned by its driver struct. Moreover, storing two different pointer
types in driver data depending on driver initialization status is barely
a good practice and in fact has led to many bugs in this driver.

Let's clean up this mess and change Analogix entry points to simply
accept some opaque struct pointer, adjusting their users at the same
time to avoid breaking the compilation.

Signed-off-by: Tomasz Figa <[email protected]>
Signed-off-by: Jeffy Chen <[email protected]>
Signed-off-by: Thierry Escande <[email protected]>
Reviewed-by: Andrzej Hajda <[email protected]>
Reviewed-by: Sean Paul <[email protected]>
Acked-by: Jingoo Han <[email protected]>
Acked-by: Archit Taneja <[email protected]>
Signed-off-by: Heiko Stuebner <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

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