scsi: ufs-msm: don't enable interrupt aggregation

Current versions of UFS host controllers on our MSMs have interrupt
aggregation logic broken. Interrupt aggregation may not work if both
threshold count and timeout is enabled. Hence disable interrupt
aggregation by enabling UFSHCD_QUIRK_BROKEN_INTR_AGGR quirk until
its fixed in the newer UFS host controller revisions.

Change-Id: I063c6d577c370bfcf5648b4b0df9292c30984c63
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>