i2c-msm-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: I0463c6980d5812c99b737b2472081ac8a041d85d
Signed-off-by: Prudhvi Yarlagadda <pyarlaga@codeaurora.org>