Staging: staging/cxt1e1: Convert bare printks to pr_<level>

Added #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
A few line splits for long arguments
A couple of embedded function names converted to "%s", __func__
Removed some uses of THIS_MODULE->name

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>