arm: relocate the exception vectors
This commit relocates the exception vectors. As ARM1176 and ARMv7 have the security extensions, it uses VBAR. For the other ARM processors, it copies the relocated exception vectors to the correct address: 0x00000000 or 0xFFFF0000. Signed-off-by: NGeorges Savoundararadj <savoundg@gmail.com> Acked-by: NAlbert ARIBAUD <albert.u.boot@aribaud.net> Cc: Tom Warren <twarren@nvidia.com>
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