forked from Mirrors/opensbi

This patch does minor typo fix in system reboot/shutdown names in platform operations. Signed-off-by: Jiuyang Liu (Sequencer) <liujiuyang1994@gmail.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Anup Patel <anup.patel@wdc.com>