i2c-msm-v2: put qup HW in pause state while SW programs bam

Starting xfer process before completing BAM programming process
may cause I2C core to fetch incorrect data. Setting the QUP state
to pause gives SW time to finish its processing.

Change-Id: Ia6aae98260755bc47d2836c8c93604ebea8a9a6d
Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org>