arm32: kaslr: Bugfix of fiq when enabled kaslr

hulk inclusion
category: bugfix
bugzilla: 51838
CVE: NA

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Fix vector fiq offset when enabled kaslr, we need to get the real symbol
address according to __kaslr_offset, otherwise the fiq interrupt will
fail to register.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>