rust: faux: add Device type with AsBusDevice support

Add a faux::Device type that wraps struct faux_device and implements
AsBusDevice, enabling faux devices to be used as parent devices for
subsystems that require a bus device, such as DRM.

Update Registration to return &faux::Device<Bound> via AsRef.

Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Link: https://patch.msgid.link/20260628145406.2107056-4-dakr@kernel.org
[ Drop redundant 'struct device' invariant; implied by valid
  struct faux_device. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

0 files changed, 0 insertions, 0 deletions