[media] adv7604: return immediately if the new input is equal to what is configured
[media] adv7604: return immediately if the new input is equal to what is configured

Signed-off-by: Mats Randgaard <d2ce125295db8300477e8aa116b5031a3e65b713@cisco.com>
Signed-off-by: Hans Verkuil <3a513708f73c27e7d36ebc496aa41dad6a3153ea@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <0cae1d1e981e84d16b82ca3d17be8a7f826608d3@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs