cmd/internal/obj/loong64: rename Class to represent the external symbol address
There is no need to define another C_SECON Class to express short
external symbol address, because the external symbol address is unknown
in assembler, relocate it in linker.
Change-Id: Id9fbd848c43ca63a21f2b6640e947140c26eeaf7
Reviewed-on: https://go-review.googlesource.com/c/go/+/565624 Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn> Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: abner chenc <chenguoqi@loongson.cn> Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Auto-Submit: abner chenc <chenguoqi@loongson.cn>