miscdevice: rust: use build_error! macro instead of function

The function called build_error is an implementation detail of the macro
of the same name. Thus, update miscdevice to use the macro rather than
the function. See [1] for more information on this.

These use the macro with the kernel:: prefix as it has not yet been
added to the prelude.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20250110162828.38614c1b@canb.auug.org.au
Link: https://lore.kernel.org/all/20241123222849.350287-2-ojeda@kernel.org/

 [1]
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/r/20250110101459.536726-1-aliceryhl@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>