Remove unnecessary GPIO dependency from Kconfig

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Avoid redundant DT parsing

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Use of_property_read_bool instead of of_find_property

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>