arm64: dts: qcom: ipq6018: drop '0x' from unit address

Nodes need not contain '0x' for the unit address. Drop it to fix the
below warning:

arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dt.yaml: reserved-memory:
'memory@0x60000' does not match any of the regexes

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20210308060826.3074234-19-vkoul@kernel.org


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