m68k: Add a missing ELF_DETAILS in link script

Commit c604abc3 ("vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG")
after should add a missing ELF_DETAILS, at the same time, the .comment
section has been included in the ELF_DETAILS.

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Link: https://lore.kernel.org/r/1605852494-23515-1-git-send-email-tangyouling@loongson.cn


Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>