Merge tag 'bitmain-initial-soc-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/linux-bitmain into arm/newsoc

Bitmain SoC changes for v5.1:

- Document Bitmain BM1880 SoC bindings
- Add ARCH_BITMAIN for supporting Bitmain SoC platforms
- Add devicetree support for Bitmain BM1880 SoC
- Add devicetree support for Sophon Edge board
- Add MAINTAINERS entry for Bitmain SoC platform

* tag 'bitmain-initial-soc-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/linux-bitmain:
  MAINTAINERS: Add entry for Bitmain SoC platform
  arm64: dts: bitmain: Add Sophon Egde board support
  arm64: dts: bitmain: Add BM1880 SoC support
  arm64: Add ARCH_BITMAIN platform
  dt-bindings: arm: Document Bitmain BM1880 SoC
Signed-off-by: Arnd Bergmann <arnd@arndb.de>