wil6210: Avoid the use of one-element array

One-element arrays are being deprecated[1]. Replace the one-element
array with a simple value type u8 reserved, once it seems this is
just a placeholder for alignment.

[1] https://github.com/KSPP/linux/issues/79

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
1 file changed