[media] s5p-mfc: modify mfc wakeup sequence for V8

MFC wakeup command has to be sent after the host receives
firmware load complete status from risc.

Signed-off-by: Arun Mankuzhi <arun.m@samsung.com>
Signed-off-by: Kiran AVND <avnd.kiran@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>