kconfig: made check-lxdialog more portable

OS-X shell did not like 'echo -e' so implement
suggestion from Al Viro to use a more portable construct.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Acked-By: NTimur Tabi <timur@freescale.com>

scripts/kconfig/lxdialog/check-lxdialog.sh

@@ -36,8 +36,10 @@ trap "rm -f $tmp" 0 1 2 3 15
 
 # Check if we can link to ncurses
 check() {
-	echo -e " #include CURSES_LOC \n main() {}" |
-	    $cc -xc - -o $tmp 2> /dev/null
+        $cc -xc - -o $tmp 2>/dev/null <<'EOF'
+#include CURSES_LOC
+main() {}
+EOF
 	if [ $? != 0 ]; then
 	    echo " *** Unable to find the ncurses libraries or the"       1>&2
 	    echo " *** required header files."                            1>&2