clk: qcom: clk-alpha-pll: Set the inited flag to avoid PLL reconfiguration

When entities outside of the HLOS configure PLLs, set the inited
flag to true in order to avoid reconfiguration at a later time.

Change-Id: I8fcd382c280a0d67c56f361a76a088b42ad05c2b
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>