linux_5.15_rc3_2021.10.01

• Changes:

1. Add DRM driver to support more HDMI monitors;
2. Support Bluetooth function with proper firmware;
3. Add reset controller driver;
4. Update the clock driver with proper parent and using the real clock tree;
5. Disabled CONFIG_NVDLA in starlight_defconfig since it will be recognized a screen card(/dev/dri/card0) under many userspace programs, please enable it or compile it as a module if needed;

buildroot upstream patch

This is release is to note that commit 83dba1f is being used in the most recent buildroot upstream patch:
http://lists.busybox.net/pipermail/buildroot/2021-June/312275.html

https://github.com/starfive-tech/linux/tree/buildroot-upstream has also been created and @pdp7 will keep this in sync with the kernel commit that upstream buildroot points to for beaglev https://github.com/buildroot/buildroot/blob/master/configs/beaglev_defconfig