Update URL for Gumstix RPM Package Repository.

NOTE: this is branch specific.  Change 'dev' to 'master' when this
code goes live.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
Remove meta-ros from build

The meta-ros layer requires bitbake features not found in Dora.

Signed-off-by: Ash Charles <ashcharles@gmail.com>