gpio: adp5588: Use devm_gpiochip_add_data() for gpio registration

Use devm_gpiochip_add_data() for GPIO registration and remove the
call for gpiochip_remove() from remove callback.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>