commit f34fd6ee1be8 breaks current dwapb gpio DT users

[Jisheng Zhang <jszhang@kernel.org>]

Hi Emil, Linus,

commit f34fd6ee1be8 ("gpio: dwapb: Use generic request, free and
set_config") breaks all current dwapb gpio DT users, for example, getting
cd-gpios will always fail as -EPROBE_DEFER. Before the commit,
dwapb_gpio_set_config() returns -ENOTSUPP for !PIN_CONFIG_INPUT_DEBOUNCE
then gpio_set_config_with_argument_optional() will happily ignore
-ENOTSUPP. After the commit, dwapb_gpio_set_config() will return
-EPROBE_DEFER unless the gpio-ranges are set in DT.

The key problem here is: almost all dwapb gpio DT users don't set
the gpio-ranges DT property, so I guess current dwapb gpio DT users
have this problem and the commit also breaks old DT compatbility.
So could we getback to previous behavior?

Thanks in advance