i2c-msm-v2: Add support for block mode

Add support for block mode for transfers that are
larger then fifo size. This mode will be useful
when I2C instance cannot use BAM pipes for such
transfer size due to ownership conflicts with
other EEs. I2C Driver can be configured either
to use Block or BAM mode for such transfer
size.

Change-Id: Ia3ab87f4dee011f9ac9d437b78cc762573540ae0
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>
Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org>