When I was recompiling the omap3-console-image I had from months ago, it was configured to use 2.6.39 by default. However, I just redid my build environment following the exact method that you listed in your link and now my default kernel is set to 3.2. If I run:
bitbake --show-version | grep linux-omap3
This was straight out of the box configuration, so it looks like 3.2 is the default kernel now. I didn't have to change anything. However, I don't think you need to rebuild your openembedded environment from scratch. I think you can do something like this from Jumpnowtek - Bottom of page:
Add a line like this to $OVEROTOP/build/conf/local.conf
# prefer 2.6.34 over the default gumstix 2.6.36 kernel
PREFERRED_VERSION_linux-omap3 = "2.6.34"
except you want version 3, so maybe change this to
PREFERRED_VERSION_linux-omap3 = "3.2"
After that you should be able to run
bitbake -c rebuild virtual/kernel
I haven't done this but it makes sense it would work. It worked for me when I wanted to switch back to kernel 2.6.34 from 2.6.39. When you're done run
bitbake --show-versions | grep linux-omap3
and post back what comes up, I'd be interested in seeing what turns up.
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