Sam Elliott 525f5262af [RISCV] Support Parsing Nonstandard Relocations (#119909) ...

This allows nonstandard relocation names to be used in `.reloc` assembly
directives (giving the correct relocation number).

No translation is done by the assembler into `R_RISCV_CUSTOM<n>` names,
and the assembler does not automatically add the relevant
`R_RISCV_VENDOR` relocation with the vendor symbol. If we want, we can
have a different directive that does this later.

The first batch of relocations to be added are from [Qualcomm's RISC-V
psABI
extensions](https://github.com/quic/riscv-elf-psabi-quic-extensions/releases/tag/v0.1).

2025-01-07 12:51:04 +00:00

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