simple-cdd: drop os-probes patch

It's been merged to debian-installer/os-prober.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

simple-cdd: move kernel package to linux-image-5.11.0-rc2-custom

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

Update README.md for v0.2 release

 - USB0 and touchpad cursor are working.
 - Update EFI Boot variable update section.
 - A few other minor updates.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

Merge pull request #1 from shawnguo2/main

Update README.md for v0.1 release