This marks all packages which depend on a target with @TARGET nonshared.
If they are not marked nonshared they would be build by the SDK build
and if this happens with a different SDK, then the SDK from the target
the package depends on, the package would not be added to the index.
This should fix the image builder for some of these packages.
This should fix the image builder at least for bcm27xx/bcm2710 and
bcm4908/generic.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
