[$] A status update for U-Boot

The U-Boot"universal boot loader" is used extensively in the embedded-Linux world.At the 2023 EmbeddedOpen Source Summit (EOSS), Simon Glass gave a presentation (slides,YouTube video) onthe status of the project, with a focus on new features added over the lastseveral years. He also wanted to talk about complexity in the firmwareworld, which he believes is increasing, and how U-Boot can help manage thatcomplexity. The talk was something of a grab bag of ideas and changesthroughout the increasingly large footprint of the project.