platform/raspberrypi: Destage VCHIQ MMAL driver

Destage the VCHIQ MMAL driver to drivers/platform/raspberrypi.

Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Link: https://patch.msgid.link

platform/raspberrypi: Destage VCHIQ MMAL driver

Destage the VCHIQ MMAL driver to drivers/platform/raspberrypi.

Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Link: https://patch.msgid.link/20251029-vchiq-destage-v3-7-da8d6c83c2c5@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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platform/raspberrypi: Destage VCHIQ interface

Destage the VCHIQ interface driver to drivers/platform/raspberrypi.

There is still the remaining TODO item of improving the documentation,
which can be

platform/raspberrypi: Destage VCHIQ interface

Destage the VCHIQ interface driver to drivers/platform/raspberrypi.

There is still the remaining TODO item of improving the documentation,
which can be handled post destaging.

Secondly, multimedia drivers like codec and ISP that rely on this
interface need to be upstreamed. And lastly, the drivers that facilitate
the shared memory between VideoCore and Linux, like the vc-sm-cma driver
and vc_mem char driver also need to be upstreamed.

Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Link: https://patch.msgid.link/20251029-vchiq-destage-v3-6-da8d6c83c2c5@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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