gpio: promote own request failure to pr_err()

These error messages are helpful to see that we fail to get
hogs. Promote them to real errors so they appear in the boot
crawl.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2015-06-05 11:10:21 +02:00
commit 8405f20894