irqchip/gic-v4.1: Properly lock VPEs when doing a directLPI invalidation

We normally rely on the irq_to_cpuid_[un]lock() primitives to make
sure nothing will change col->idx while performing a LPI invalidation.

However, these primitives do not cover VPE doorbells, and we have
some open-coded locking for that. Unfortunately, this locking is
pretty bogus.

Instead, extend the above primitives to cover VPE doorbells and
convert the whole thing to it.

Fixes: f3a059219bc7 ("irqchip/gic-v4.1: Ensure mutual exclusion between vPE affinity change and RD access")
Reported-by: Kunkun Jiang <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Cc: Zenghui Yu <[email protected]>
Cc: [email protected]
Tested-by: Kunkun Jiang <[email protected]>
Reviewed-by: Zenghui Yu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

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