uboot-phytec

riscv: Adjust the _exit_trap() position to come before handle_trap()

With this change, we can avoid a forward declaration.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup@brainfault.org>