i2c: i2c-msm-geni: Do I2C configurations during resume

Do I2C frequency related configurations during resume.
Don't make the current message as NULL before the whole
transfer process is complete.

Change-Id: I8c4797fed1cfa0743c98eea3324e4b7b82d7f3cb
Signed-off-by: Vipin Deep Kaur <vkaur@codeaurora.org>