Merge tag 'pull-loongarch-20220920' of https://gitlab.com/gaosong/qemu into staging

Merge tag 'pull-loongarch-20220920' of https://gitlab.com/gaosong/qemu into staging

v2: fix compile error.

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* tag 'pull-loongarch-20220920' of https://gitlab.com/gaosong/qemu:
  hw/loongarch: Improve acpi dsdt table
  hw/loongarch: Support memory hotplug
  hw/loongarch: Fix acpi ged irq number in dsdt table
  hw/loongarch: Add RAMFB to dynamic_sysbus_devices list
  hw/loongarch: Add hotplug handler for machine
  hw/loongarch: Add platform bus support
  hw/loongarch: Add interrupt information to FDT table
  hw/loongarch: Support fw_cfg dma function
  hw/loongarch: Remove vga device when loongarch init

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>