ARM: dts: vf610: fix missing irqs

While adding the MSCM interrupt router, all interrupts have been moved
to vfxxx.dtsi again. However, some properties got lost. Readd the
missing interrupt properties.

Fixes: 97e6466ab9d0 ("ARM: dts: vf610: add Miscellaneous System Control
Module (MSCM)")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>