Attributes for v79 and 81 were recorded but ignored.

Summary:
This patch has broken the `libc` build bot. I could work around that but
the changes seem unnecessary.

This reverts commit 9ba844eb3a21d461c3adc7add7691a076c6992fc.

When handling CUDA ELF files via objdump or LLDB, the ELF parser in LLVM
needs to distinguish if an ELF file is sass or not, which requires a
triple for sass to exist in llvm. This patch includes all the necessary
changes for LLDB and objdump to correctly identify these files with the
correct triple.

Summary:
Turns out the new CUDA ABI now applies retroactively to all the other
SMs if you upgrade to CUDA 13.0. This patch changes the scheme, keeping
all the SM flags consistent but using an offset.

Fixes: https://github.com/llvm/llvm-project/issues/159088

Summary:
We rely on these flags to do things in the runtime and print the
contents of binaries correctly. CUDA updated their ABI encoding recently
and we didn't handle that. it's a new ABI entirely so we just select on
it when it shows up.

Fixes: https://github.com/llvm/llvm-project/issues/148703

This patch adds dummy symbols for PLT entries for RISC-V 32-bit and
64-bit targets so llvm-objdump can show the function symbol that
corresponds to each PLT entry.

Version 2 was added more than two years ago
(https://github.com/llvm/llvm-project/commit/6015a045d768feab3bae9ad9c0c81e118df8b04a).
So it should be safe to deprecate older versions.

This is just a stub for now.