pinctrl/nomadik: db8500: fix kp pin group

kp_a_2 pin group was defined but was not declared
as a group of kp function.

Signed-off-by: Patrice Chotard <patrice.chotard@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 file changed