LoongArch: Fix typo "avaliable" in comment of vmlinux.lds.S Correct "avaliable" to "available", reported by scripts/checkpatch.pl using the misspelling list in scripts/spelling.txt. It only touches the comments, no code changes. Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>