Duplicate opps reported by buggy SCP firmware currently show up
as warnings even though the only functional impact is that the
level/index remain inaccessible. Make it less scary for the end
user by using dev_info instead, along with FW_BUG tag.
Suggested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Sibi Sankar <quic_sibis@xxxxxxxxxxx>