scsi: ufs: Don't call trace_ufshcd_upiu() in case trace poit is disabled

Don't call trace_ufshcd_upiu() in case ufshba_upiu trace poit is not
enabled.

Link: https://lore.kernel.org/r/20210105113446.16027-4-huobean@gmail.com
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>