ARM: dts: qcom: sdx55: Add QPIC NAND support

Add qpic_nand node to support QPIC NAND controller on SDX55 platform.
Since there is no "aon" clock in SDX55, a dummy clock is provided.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210106125322.61840-11-manivannan.sadhasivam@linaro.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>