firmware: ti_sci: fix typo in boot authentication message name

Fix AUTH_BOOT message identifier (s/IMIAGE/IMAGE)

Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Acked-by: Andrew Davis <afd@ti.com>
2 files changed