init.sh: Update usage printout for unsupported target
init.sh: Update usage printout for unsupported target

The user printout referred to "gdp-11".  Now more generic.

Signed-off-by: Gunnar Andersson <df6c1dc70ee3404c16d7de0a5a8d978b44fa18d4@genivi.org>

gunnarx/genivi-dev-platform,gunnarx/genivi-dev-platform,gunnarx/genivi-dev-platform,chbae/genivi-dev-platform,GENIVI/genivi-dev-platform,GENIVI/genivi-dev-platform,GENIVI/genivi-dev-platform,chbae/genivi-dev-platform,GENIVI/genivi-dev-platform,chbae/genivi-dev-platform,chbae/genivi-dev-platform,gunnarx/genivi-dev-platform