omap dss: renamed panel drivers to controller drivers; added samsung and solomon

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
omap dss: enabled compilation of drivers as modules

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
omap dss: fixed ssd2858 drvier so that it compiles (not tested)

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
omap dss: minor tweaks to make the BOE panel work with panelselect

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
omap dss: minor correction for panelselect

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>