dt-bindings: leds: Add gpio-line-names to PCA9532 GPIO

This is a gpio-controller, so gpio-line-names should be allowed as well.

pca9532 supports up to 16 GPIOs.

Signed-off-by: Alexander Stein <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

Documentation/devicetree/bindings/leds/nxp,pca953x.yaml

···
 
   gpio-controller: true
 
+  gpio-line-names:
+    minItems: 1
+    maxItems: 16
+
   '#gpio-cells':
     const: 2