Return statements in functions returning bool should use true or false
instead of an integer value.

This code was detected with the help of Coccinelle.

Link: http://lkml.kernel.org/r/20180802010056.GA31012@embeddedor.comSigned-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>