build: install into bin instead of sbin

Installs into bin instead of sbin per guidelines.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I7c3b4829ed7a05bb1e3d85128182293b1e08286b
diff --git a/service_files/xyz.openbmc_project.Chassis.Buttons.service b/service_files/xyz.openbmc_project.Chassis.Buttons.service
index f05c00e..3a501af 100644
--- a/service_files/xyz.openbmc_project.Chassis.Buttons.service
+++ b/service_files/xyz.openbmc_project.Chassis.Buttons.service
@@ -4,7 +4,7 @@
 [Service]
 Restart=always
 RestartSec=3
-ExecStart=/usr/sbin/buttons
+ExecStart=/usr/bin/buttons
 SyslogIdentifier=buttons
 Type=dbus
 BusName=xyz.openbmc_project.Chassis.Buttons