clk: qcom: alpha: Remove usage of pll->inited flag for Lucid

The PLL configuration if required should be invoked by the consumer of the
pll before using it. So remove any re-configuration code in clk_enable
path.

Change-Id: Id0149dd51951d826ff9fba575b556df780715718
Signed-off-by: Taniya Das <tdas@codeaurora.org>