dt-bindings: pinctrl: semtech,sx150xq: fix match patterns for 16 GPIOs matching

The current pattern for SX1503 and SX1509Q with 16 GPIOs only matches
"gpio0", "gpio1", and "gpio5" instead of "gpio0" to "gpio15" included.

Fix these patterns to match the whole 16 GPIO line names.

Fixes: 29c10bce ("dt-bindings: pinctrl: convert semtech,sx150xq bindings to dt-schema")
Reported-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20221121-sx150xq_bindings_fixup-v1-0-e754f183b611@linaro.org


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>