MAINTAINERS: Update ADI area to match more drivers and boards

Updates the ADI platforms area to match additional drivers for ADI part
numbers (e.g., ad405x, ad559x, and adp5585) and ADI shield boards (e.g.,
eval_ad4052_ardz).

Signed-off-by: Maureen Helm <maureen.helm@analog.com>
1 file changed