dt-bindings: clock: Add A7 PLL binding for SDX65

Add information for Cortex A7 PLL clock in Qualcomm
platform SDX65.

Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1645505785-2271-2-git-send-email-quic_rohiagar@quicinc.com