clk: smd-rpm: Add support for additional clocks for QCS405

Add support for required rf_clk3 clocks in RPM clock driver.
Also, add the clock references for the same.

Change-Id: I1f789d059aca8614b9cd7eb71c5a376d53991143
Signed-off-by: Shefali Jain <shefjain@codeaurora.org>