scsi: ufs-qcom: don't print error if ufs_qcom_update_sec_cfg fails

Some platforms don't support restoring the secure configuration as
secure configuration can never be lost hence scm_restore_sec_cfg() is
expected to be failed for such platforms. This change changes the
failure message level from error to debug.

Change-Id: Ie4b96971d5c4c394576a78444fe5013749375c28
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>