clk: qcom: clk-alpha-pll: Fix zonda set_rate failure when PLL is disabled

Currently, clk_zonda_pll_set_rate polls for the PLL to lock even if the
PLL is disabled. However, if the PLL is disabled then LOCK_DET will
never assert and we'll return an error. There is no reason to poll
LOCK_DET if the PLL is already disabled, so skip polling in this case.

Fixes: f21b6bfecc27 ("clk: qcom: clk-alpha-pll: add support for zonda pll")
Cc: [email protected]
Signed-off-by: Satya Priya Kakitapalli <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

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