lintian: Lintian fixes

  - Get rid of Multi-Arch -- we don't use it, neither does upstream.
  - weston-launch is supposed to be SUID root.

Change-Id: I5662a6254d413266c257309dd32cf1fc5be20845
diff --git a/debian/control b/debian/control
index 0939d86..8c58b66 100644
--- a/debian/control
+++ b/debian/control
@@ -41,7 +41,7 @@
 Package: weston-imx
 Section: libdevel
 Architecture: any
-Priority: extra
+Priority: optional
 Depends:
  imx-gpu-viv,
  libinput10,
@@ -49,7 +49,6 @@
  libxcb-composite0,
  ${shlibs:Depends},
  ${misc:Depends}
-Multi-Arch: foreign
 Provides: weston
 Conflicts: weston
 Description: Weston compositor w/ IMX support.
diff --git a/debian/lintian-overrides b/debian/lintian-overrides
index a0bc28e..ca85fff 100644
--- a/debian/lintian-overrides
+++ b/debian/lintian-overrides
@@ -2,3 +2,4 @@
 weston-imx: non-empty-dependency_libs-in-la-file *
 weston-imx: non-dev-pkg-with-shlib-symlink *
 weston-imx: shlib-in-multi-arch-foreign-package *
+weston-imx: setuid-binary usr/bin/weston-launch 4755 root/root