Request to backport "irqchip/gic-v3-its: Fix VSYNC referencing an unmapped VPE on GIC v4.1"

[Zenghui Yu]

Hi Greg, Sasha,

Could you please help to backport the upstream commit
80e9963fb3b5509dfcabe9652d56bf4b35542055 ("irqchip/gic-v3-its: Fix VSYNC
referencing an unmapped VPE on GIC v4.1") to

* 5.10
* 5.15
* 6.1
* 6.6

trees? It can be applied and built (with arm64's defconfig) cleanly on
top of the mentioned stable branches.

Thanks,
Zenghui