i2c-msm-v2: remove version dependent code from i2c driver

Remove hw-version callback mechanism from the i2c
driver and correct the max size of a transfer buffer.

Change-Id: Ic6dd01b983b2c953c45271bc4d27f7da5607b5ea
Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>