ASoC: bf5xx-ac97: Fix compile error with SND_BF5XX_HAVE_COLD_RESET

If CONFIG_SND_BF5XX_HAVE_COLD_RESET is enabled building the blackfin ac97 driver
fails with the following compile error:
	sound/soc/blackfin/bf5xx-ac97.c: In function ‘asoc_bfin_ac97_probe’:
	sound/soc/blackfin/bf5xx-ac97.c:297: error: expected ‘;’ before ‘{’ token
	sound/soc/blackfin/bf5xx-ac97.c:302: error: label ‘gpio_err’ used but not defined

The issue was introduced in commit 6dab2fd7 ("ASoC: bf5xx-ac97: Convert to
devm_gpio_request_one()").

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>