uefi-raw: Add HII_CONFIG_ACCESS and KEYWORD_HANDLER protocol bindings

[seijikun]

Checklist

• Sensible git history (for example, squash "typo" or "fix" commits). See the Rewriting History guide for help.
• Update the changelog (if necessary)

[nicholasbishop]

I found myself confused by naming when looking at this in the spec. It starts out referring to EFI_CONFIG_KEYWORD_HANDLER_PROTOCOL, but then in the parameters of GetData and SetData the type of the This pointer is EFI_KEYWORD_HANDLER_PROTOCOL.

I guess this is just a mistake in the spec? It looks like edk2 sticks with the EFI_CONFIG_KEYWORD_HANDLER_PROTOCOL naming, so (unless I'm missing something, which is very possible) I think the name here should be ConfigKeywordHandlerProtocol.