mini-x-session: Fix starting of x-session

We need to use sudo semantics since it does not start correctly
with su. Added RDEPENDS to ensure it's present on target.

The SESSION_DIR test was constructed incorrectly, so fixed it.

(From OE-Core rev: badf3a32b9737f2ad6f9c9ff2fe623fe17295946)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/mini-x-session/files/mini-x-session

@@ -17,13 +17,14 @@ exec /etc/mini_x/session
 fi
 
 MINI_X_SESSION_DIR=/etc/mini_x/session.d
-if [ -d "$MINI_X_SESSION_DIR"]; then
+if [ -d "$MINI_X_SESSION_DIR" ]; then
 	# Execute session file on behalf of file owner
 	find $MINI_X_SESSION_DIR -type f | while read SESSIONFILE; do
 		set +e
 		USERNAME=`stat -c %U $SESSIONFILE`
 		# Using su rather than sudo as latest 1.8.1 cause failure [YOCTO #1211]
-		su -l -c '$SESSIONFILE&' $USERNAME
+#		su -l -c '$SESSIONFILE&' $USERNAME
+		sudo -b -i -u $USERNAME $SESSIONFILE&
 		set -e
 	done
 fi

meta/recipes-graphics/mini-x-session/mini-x-session_0.1.bb

@@ -13,6 +13,8 @@ RCONFLICTS_${PN} = "matchbox-common"
 SRC_URI = "file://mini-x-session"
 S = "${WORKDIR}"
 
+RDEPENDS_${PN} = "sudo"
+
 inherit update-alternatives
 
 ALTERNATIVE_${PN} = "x-session-manager"