Linux 4.4.156

BugLink: https://bugs.launchpad.net/bugs/1797563Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

Makefile

 VERSION = 4
 PATCHLEVEL = 4
-SUBLEVEL = 155
+SUBLEVEL = 156
 EXTRAVERSION =
 NAME = Blurry Fish Butt