Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sh
- RZ/G2L part 1, except for two serial port patches which I had to drop as they broke R2Dplus, they will come later via subsequent PR.
- RZ/G2L part 1, except for two serial port patches which I had to drop as they broke R2Dplus, they will come later via subsequent PR.