staging: greybus: arche: use sysfs_emit() instead of sprintf()

staging: greybus: arche: use sysfs_emit() instead of sprintf()

Replace sprintf() with sysfs_emit() in state_show() sysfs attribute
callbacks in arche-platform.c and arche-apb-ctrl.c.

Checkpatch complains about code using sprintf(). This code here is
obviously safe as-is, but it would be more appropriate to use
sysfs_emit().

Signed-off-by: Ruslan Valiyev <linuxoid@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/20260226074858.67635-1-linuxoid@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>