LoongArch inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I736HO

--------------------------------

Use the "la_abs macro" instead of the "la.abs pseudo instruction" to
prepare for the subsequent PIE kernel. When PIE is not enabled, la_abs
is equivalent to la.abs.
Signed-off-by: NYouling Tang <tangyouling@loongson.cn>
Change-Id: I640026372b7fe03af662aa7fa980427ab860fe5c
(cherry picked from commit d40a9b0a)