dt-bindings: pinctrl: Add DT bindings for Spreadtrum SC9860

This patch adds the binding documentation for Spreadtrum SC9860 pin
controller device.

Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2 files changed