Merge tag 'doc-2023-10-rc5-2' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request doc-2023-10-rc5-2

Documentation:

* fix code comments referring to doc/develop/expo.rst
* remove unused values from Chromebook kernel command line
* correct reference tag placement in tools/binman/binman.rst

Others:

* test: fix build dependency for event unit tests