ARM: dts: qcom-apq8060: Fix up interrupt parents

Before we fixed up the interrupt hierarchy for the SSBI
GPIO controller, we had to use the PM8058 directly to pick
interrupts. After making the interrupt controller work properly,
we can reference the real interrupt parent.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>