meson: Install obmc-console-server in $sbindir for consistency

Currently the autotools build and the systemd service units expect
obmc-console-server to be installed in ${sbindir}. This probably still
isn't quite right (`${libexecdir}/obmc-console/` might be a better
choice by [1]) but at least it's consistent.

[1] https://github.com/openbmc/docs/blob/master/anti-patterns.md#incorrect-placement-of-executables-in-sbin-usrsbin-or-bin-usrbin

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I6db11d0916ce40d0dcae4617d1ae1ddab3fe9a81
diff --git a/meson.build b/meson.build
index 8787f2a..de714c1 100644
--- a/meson.build
+++ b/meson.build
@@ -61,6 +61,7 @@
              dependency('libsystemd'),
              meson.get_compiler('c').find_library('rt')
            ],
+           install_dir: get_option('sbindir'),
            install: true)
 
 executable('obmc-console-client',