clk: qcom: lagoon: Remove support of 19.2MHz from iris_clk_src

Update the frequency table of video_cc_iris_clk_src to remove the
support of 19.2MHz. Client need to run the clock at lowest supported
rate from the frequency table that is 133.2MHz, thus updating the
frequency table.

Change-Id: Iecae0c09759450110b425c40eed6d2a2171ac5f5
Signed-off-by: Naveen Yadav <naveenky@codeaurora.org>