staging: bcm: fix coding style warnings and errors reported by checkpatch.pl tool

Staging: bcm: Fix coding style errors reported by checkpatch.pl

Fix multiple warnings and errors reported by checkpatch.pl

Signed-off-by: Kevin <McKinney&lt;klmckinney1@gmail.com>
Reviewed-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>