i2c-msm-v2: remove stop tag after every read

Multiple buffers are used for the xfers which are
larger than 256 bytes. This patch allows such buffers
to add a repeated start tag for the subsequent read buffers
in a read message instead of adding a stop tag. Only last
buffer in a message uses a STOP tag.

Change-Id: I462c1ee88f247586b984ff6d1c9c799538bc2e90
Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org>