sw64: rewrite {SAVE,RESTORE}_ALL in a simpler way

Sunway inclusion
category: performance
bugzilla: https://gitee.com/openeuler/kernel/issues/I56OLG



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Move {SAVE,RESTORE}_{COMMON,CALLEE}_REGS into {SAVE,RESTORE}_ALL
and remove the useless macros.

Signed-off-by: He Sheng <hesheng@wxiat.com>
Reviewed-by: Cui Wei <cuiwei@wxiat.com>
Signed-off-by: Gu Zitao <guzitao@wxiat.com>