staging: panel: (coding style) Line alignments and malloc sizeof

Style-only modifications to comply with checkpatch.pl --strict --file.
. Correctly realigns the lines that needed to be ;
. Suppress useless blank rows ;
. Fix sizeof() issues in various -malloc() functions.

Signed-off-by: Dominique van den Broeck <domdevlin@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>