Power on CA15 SCU in case of booting from a CA7 core.
Signed-off-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
[damm@opensource.se: Converted to use broken out SYSC code]
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>