Merge tag 'u-boot-rockchip-20191124' of https://gitlab.denx.de/u-boot/custodians/u-boot-rockchip

- Clean vid/pid in Kconfig and add fastboot for rk3399
- add 'u-boot, spl-fifo-mode' for mmc
- Use FIT generator for rk3229 optee and rk3368 ATF
- fan53555: add support for Silergy SYR82X and SYR83X