ARM: dts: qcom: ipq8064: add missing hwlock

Add missing hwlock for ipq8064 dtsi provided by qcom,sfpb-mutex.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
[bjorn: Moved the node inside /soc]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220707102040.1859-2-ansuelsmth@gmail.com