[PATCH] riscv: elf: add .riscv.attributes parsing

[Vineet Gupta]

On 1/10/23 15:21, Jessica Clarke wrote:
>>> You also should handle more than one sub-subsection even if tools don’t
>>> emit it today.
>> Just to be on same page, a sub-section implies the following
>>
>>        uint32:len, NTBS:vendor-name, uint8: Tag_file, uint32:data-len, <tag><value>....
>>
>> If so, the code does support multiple of these
> That’s a sub-section, but I said sub-subsection.

The psABI documentation that we reviewed yesterday only mentions 
Tag_File = 1 and doesn't mention the term sub-subsection at all.
We need to be consistent between code and the new documentation or just 
add reference to ARM documentation which covers everything and write the 
general purpose parser.

-Vineet