arch/loongarch: Fix toolchain triple ABI suffix
LoongArch GCC infers ABI from triple suffix, thus it's necesessary
to set up proper triple ABI suffixes for different ABI types.
See [1].
Adjust ABI suffix as per Table 10. List of possible <fabi-suffix>
in "LoongArch Toolchain Conventions Version 1.00" [2].
[1] https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config.gcc;h=a6f6efec4e103301225ef74c2d1159933d1c9cf8;hb=1757c320badc92c0628eafcd07d54585659692ed#l5102
[2] https://loongson.github.io/LoongArch-Documentation/LoongArch-toolchain-conventions-EN.html#_gnu_target_triplets_and_multiarch_specifiers
Link: https://lore.kernel.org/all/20250706105859.292908-1-ju.o@free.fr/
Suggested-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
[Julien:
- add link to gcc sources infering ABI
- update loongarch doc link to point to triplet section
]
Signed-off-by: Julien Olivain <ju.o@free.fr>
Jiaxun Yang