Merge tag 'loongarch-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Optimise getcpu() with vDSO

 - PCI enablement on top of pci & irqchip changes

 - Stack unwinder and stack trace support

 - Some bug fixes and build error fixes

 - Update the default config file

* tag 'loongarch-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  docs/zh_CN/LoongArch: Add I14 description
  docs/LoongArch: Add I14 description
  LoongArch: Update Loongson-3 default config file
  LoongArch: Add USER_STACKTRACE support
  LoongArch: Add STACKTRACE support
  LoongArch: Add prologue unwinder support
  LoongArch: Add guess unwinder support
  LoongArch: Add vDSO syscall __vdso_getcpu()
  LoongArch: Add PCI controller support
  LoongArch: Parse MADT to get multi-processor information
  LoongArch: Jump to the link address before enable PG
  LoongArch: Requires __force attributes for any casts
  LoongArch: Fix unsigned comparison with less than zero
  LoongArch: Adjust arch/loongarch/Kconfig
  LoongArch: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK