drm: remove driver date from struct drm_driver and all drivers

We stopped using the driver initialized date in commit 7fb8af6798e8
("drm: deprecate driver date") and (eventually) started returning "

drm: remove driver date from struct drm_driver and all drivers

We stopped using the driver initialized date in commit 7fb8af6798e8
("drm: deprecate driver date") and (eventually) started returning "0"
for drm_version ioctl instead.

Finish the job, and remove the unused date member from struct
drm_driver, its initialization from drivers, along with the common
DRIVER_DATE macros.

v2: Also update drivers/accel (kernel test robot)

Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Acked-by: Simon Ser <[email protected]>
Acked-by: Jeffrey Hugo <[email protected]>
Acked-by: Lucas De Marchi <[email protected]>
Acked-by: Dmitry Baryshkov <[email protected]> # msm
Reviewed-by: Thomas Zimmermann <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/1f2bf2543aed270a06f6c707fd6ed1b78bf16712.1733322525.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <[email protected]>

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