[PATCH -next] ASoC: rt1019: make symbol 'rt1019_i2c_driver' static

['w00385741]

From: Wei Yongjun <weiyongjun1 at huawei.com>

The sparse tool complains as follows:

sound/soc/codecs/rt1019.c:927:19: warning:
 symbol 'rt1019_i2c_driver' was not declared. Should it be static?

This symbol is not used outside of rt1019.c, so this
commit marks it static.

Fixes: 7ec79d3850d0 ("ASoC: rt1019: add rt1019 amplifier driver")
Reported-by: Hulk Robot <hulkci at huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>
---
 sound/soc/codecs/rt1019.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt1019.c b/sound/soc/codecs/rt1019.c
index fb275686a00f..5138f028d9f2 100644
--- a/sound/soc/codecs/rt1019.c
+++ b/sound/soc/codecs/rt1019.c
@@ -924,7 +924,7 @@ static int rt1019_i2c_probe(struct i2c_client *i2c,
 		&soc_component_dev_rt1019, rt1019_dai, ARRAY_SIZE(rt1019_dai));
 }
 
-struct i2c_driver rt1019_i2c_driver = {
+static struct i2c_driver rt1019_i2c_driver = {
 	.driver = {
 		.name = "rt1019",
 		.of_match_table = of_match_ptr(rt1019_of_match),