opensbi: Upgrade from v0.4 to v0.5

This release has:
    Lot of critical fixes
    Hypervisor extension support
    SBI v0.2 base extension support
    Debug prints support
    Handle traps when doing unpriv load/store
    Allow compiling without FP support
    Use git describe to generate boot-time banner
    Andes AE350 platform support

ShortLog:

Anup Patel (14):
      platform: sifive/fu540: Move FDT further up
      lib: Allow compiling without FP support
      lib: Introduce sbi_dprintf() API
      lib: Use sbi_dprintf() for invalid CSRs
      lib: Handle traps when doing unpriv load/store in get_insn()
      lib: Delegate supervisor ecall to HS-mode when H extension available
      lib: Extend sbi_hart_switch_mode() to support hypervisor extension
      lib: Extend sbi_trap_redirect() for hypervisor extension
      lib: Redirect WFI trapped from VS/VU mode to HS-mode
      include: Extend get_insn() to read instruction from VS/VU mode
      lib: Emulate HTIMEDELTA CSR for platforms not having TIME CSR
      Makefile: Minor fix in OPENSBI_VERSION_GIT
      lib: Fix coldboot race condition observed on emulators/simulators
      include: Bump-up version to 0.5

Atish Patra (16):
      lib: Provide an atomic exchange function unsigned long
      lib: Fix race conditions in tlb fifo access.
      platform: Remove the ipi_sync method from all platforms.
      lib: Fix timer for 32 bit
      lib: Support atomic swap instructions
      lib: Upgrade to full flush if size is at least threshold
      docs: Update the fu540 platform guide as per U-Boot documents.
      lib: Change tlb range flush threshold to 4k page instead of 1G
      lib: provide a platform specific tlb range flush threshold
      lib: Fix tlb flush range limit value
      Test: Move test payload related code out of interface header
      lib: Align error codes as per SBI specification.
      lib: Rename existing SBI implementation as 0.1.
      lib: Remove redundant variable assignment
      lib: Implement SBI v0.2
      lib: Provide a platform hook to implement vendor specific SBI extensions.

Bin Meng (6):
      platform: sifive: fu540: Use standard value string for cpu node status
      README: Document 32-bit / 64-bit images build
      treewide: Use conventional names for 32-bit and 64-bit
      platform: sifive: fu540: Expand FDT size before any patching
      firmware: Use macro instead of magic number for boot status
      docs: platform: Update descriptions for qemu/sifive_u support

Damien Le Moal (4):
      kendryte/k210: Use sifive UART driver
      kendryte/k210: remove sysctl code
      README: Update license information
      kendryte/k210: remove unused file

Georg Kotheimer (1):
      utils: Use cpu_to_fdt32() when writing to fdt

Jacob Garber (4):
      lib: Use bitwise & instead of boolean &&
      lib: Use correct type for return value
      lib: Prevent unintended sign extensions
      lib: Correct null pointer check

Lukas Auer (1):
      firmware: do not use relocated _boot_status before it is valid

Nylon Chen (3):
      firmware: Fix the loop condition of _wait_relocate_copy_done section
      platform: Add Andes AE350 initial support
      scripts: Add AE350 to platform list in the binary archive script

Palmer Dabbelt (1):
      Include `git describe` in OpenSBI

Zong Li (1):
      Write MSIP by using memory-mapped control register

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>

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