uio: uio_fsl_elbc_gpcm: Make dev_attr_reg_br and dev_attr_reg_or static

Fix sparse warnings:

drivers/uio/uio_fsl_elbc_gpcm.c:71:1: warning:
symbol 'dev_attr_reg_br' was not declared. Should it be static?
drivers/uio/uio_fsl_elbc_gpcm.c:72:1: warning:
symbol 'dev_attr_reg_or' was not declared. Should it be static?

Signed-off-by: YueHaibing <[e-mail]>
Reviewed-by: Mukesh Ojha <[e-mail]?
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/uio/uio_fsl_elbc_gpcm.c

···
 static ssize_t reg_store(struct device *dev, struct device_attribute *attr,
 			 const char *buf, size_t count);
 
-DEVICE_ATTR(reg_br, S_IRUGO|S_IWUSR|S_IWGRP, reg_show, reg_store);
-DEVICE_ATTR(reg_or, S_IRUGO|S_IWUSR|S_IWGRP, reg_show, reg_store);
+static DEVICE_ATTR(reg_br, 0664, reg_show, reg_store);
+static DEVICE_ATTR(reg_or, 0664, reg_show, reg_store);
 
 static ssize_t reg_show(struct device *dev, struct device_attribute *attr,
 			char *buf)