staging: bcm2835-camera: Reduce length of enum names

staging: bcm2835-camera: Reduce length of enum names

We have numerous lines over 80 chars, or oddly split. Many
of these are due to using long enum names such as
MMAL_COMPONENT_CAMERA.
Reduce the length of these enum names.

Signed-off-by: Dave Stevenson <[email protected]>
Signed-off-by: Stefan Wahren <[email protected]>
Acked-by: Hans Verkuil <[email protected]>
Acked-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>