i2c-qcom-geni: Add log to print the i2c bus frequency

Add log to print the i2c bus frequency. Currently log is
present only to print the default frequency which won't
work if the frequency is defined in dtsi node by i2c client.

Change-Id: I653c7a0194e58372867f0588064a6e3f9c336b58
Signed-off-by: Prudhvi Yarlagadda <pyarlaga@codeaurora.org>