Merge tag 'rockchip-for-v2019.07-rc1' of git://git.denx.de/u-boot-rockchip

Merge tag 'rockchip-for-v2019.07-rc1' of git://git.denx.de/u-boot-rockchip

Improvements and new features:
- split more rockchip pinctrl_core feature into per SoC
- enable TPL for evb-rk3399 board
- enable TPL/SPL for evb-px5 board
- enable TPL and OP-TEE support for evb-rk3229
- update fix in arm common assembly start code for rockchip header file
- update default SPL_FIT_GENERATOR for rockchip
- rk3399 boards update to use '-u-boot.dtsi'
- add new rk3399 boards: Nanopi M4, Nanopc T4
- enable sound for chromebook_minnie