[media] cx25840: fix bad identing

drivers/media/i2c/cx25840/cx25840-core.c:974 input_change() warn: inconsistent indenting

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>