i2c: mux: demux-pinctrl: Convert to use sysfs_emit_at() API
Follow the advice of the Documentation/filesystems/sysfs.rst and show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. Signed-off-by:ye xingchen <ye.xingchen@zte.com.cn> Tested-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> [wsa: proper subject prefix] Signed-off-by:
Wolfram Sang <wsa@kernel.org>
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