pinctrl: use ERR_CAST instead of ERR_PTR(PTR_ERR(...))

This doesn't change semantics, just looks nicer.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 file changed