clk: qcom: clock-cpu-8994: Don't cache the cci_pll_main rate

The cci_pll_main shares a common parent (the cci_pll) with
another input of the cci_hf_mux (the early output of the cci_pll).
Set the CLKFLAG_NO_RATE_CACHE in order to always update
the rate of cci_pll_main, since its parent's rate may
have changed underneath.

Change-Id: Ifdf2ce20a8f0d324c6db5ef7d1eabbcd902b9ad3
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>