Bump Linux to 5.10.10 and U-Boot to 2020.10. In the new kernel sunxi-mmc
driver has been switched to asynchronous probe. As a result, mmc indexes
can be shuffled breaking board boot. Add patch that pins mmc indexes to
their original ordered values.
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>