ARM: dts: msm: Disable wake up IRQ for PCIe2 on the SBC8096

"qcom,ep-wakeirq" property has to be disabled on the SBC8096
to make the PCIe2 work properly.
The SBC8096 has onboard ethernet adapter connected to the PCIe2.
With the "qcom,ep-wakeirq" enabled (in the target device tree)
the adapter's probe fails.

Change-Id: I84c7110603d5b4d9ea48125c198ef8b51cc2f145
Signed-off-by: Ilia Lin <ilialin@codeaurora.org>