staging: pi433: Make only one statement per line

Lines containing multiple statements were broken into multiple
lines, increasing readability and complying with the coding standard.
This also fixes several checkpatch.pl errors complaining about
the lines being too long.

Signed-off-by: Sophie Matter <sophie.matter@web.de>
Signed-off-by: Rico Schrage <rico.schrage@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>