arm64: dts: msm8996: Fix CSI IRQ types

Each IRQ_TYPE_NONE interrupt causes a warning at boot.
Fix that by defining an appropriate type.

Fixes: e0531312

 ("arm64: dts: qcom: msm8996: Add CAMSS support")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1587470425-13726-1-git-send-email-loic.poulain@linaro.org


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