How do I enable the build for camera driver on Android eclair?

```
What steps will reproduce the problem?
1. I downloaded the rowboat-android eclair.
2. I built the android image and prepared for SD
3. Android was booted from SD on Beagleboard xM
4. The camera related modules(videodev.ko, videobuf-core.ko, v4l2-common.ko,
vivi.ko etc) are missing from both the build directory and target directory.
5. How can I configure the Makefile to include those modules?

What is the expected output? What do you see instead?

I expected to see those kernel modules in ./kernel/drivers/media/video/
directory.

What version of the product are you using? On what operating system?

Beagleboard xM. I'm using uBuntu 10.04 machine.

Please provide any additional information below.

```

Original issue reported on code.google.com by `junzha...@hotmail.com` on 18 Nov 2010 at 9:25

Start by reviewing the Android build steps and the Makefile configuration for the rowboat-android eclair tree. Check why the camera modules listed in kernel/drivers/media/video/ are absent from both the build directory and target directory. Done means the requested modules are built and present in the target output for the Beagleboard xM image.

Written by the indexing model from the issue text.