* For xt-q8l-v10 rk3288 board:
- Upgraded u-boot to v2020.04, reworked configuration to match new version, enabled HDMI video console
- Increased u-boot boot delay from 0 seconds to 1 second for rockchip boards, to allow user interrupt u-boot boot process
- Imported efuse rk3288 driver into u-boot, made ethernet address stable using soc serial
- Upgraded ddrbin loader to v1.08
- Added VDSO patch for rockchip-current and rockchip-dev kernels for clock_gettime64 to fix erratic clock on 32 bit ARM devices with recent glibc
- Disabled 600 Mhz OPP node for GPU due to Panfrost instabilities, thus enabled 500 Mhz node
- Various fixes and enhancements to xt-q8l-v10 device trees for current and dev targets
- Added (disabled) u-boot HDMI patch for Tinkerboard
* Removed rk3288 ddrbin v1.08 from rockchip blobs, changed reference to use rkbin-tools repository
* Removed unneeded disabled patch for tinkerboard HDMI
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