ARM: qcom_defconfig: add msm8974 interconnect support

Add interconnect support for msm8974-based SoCs in order to support the
GPU on this platform.

Reviewed-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Brian Masney <masneyb@onstation.org>
Link: https://lore.kernel.org/r/20191024103140.10077-2-masneyb@onstation.org


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