Merge tag 'pull-loongarch-20230605' of https://gitlab.com/gaosong/qemu into staging

Fixes Coverity CID: 1512452, 1512453
Fixes: 78464f023b54 ("hw/loongarch/virt: Modify ipi as percpu device")
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* tag 'pull-loongarch-20230605' of https://gitlab.com/gaosong/qemu:
  hw/intc/loongarch_ipi: Bring back all 4 IPI mailboxes

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>