package/iwd: suppress S40iwd shellcheck warnings

- suppress S40iwd shellcheck warnings:

  In package/iwd/S40iwd line 8:
  [ -r "/etc/default/$DAEMON" ] && . "/etc/default/$DAEMON"
                                     ^--------------------^ SC1090 (warning): ShellCheck can't follow non-constant source. Use a directive to specify location.

  In package/iwd/S40iwd line 15:
  		-- $IWD_ARGS
                     ^-------^ SC2086 (info): Double quote to prevent globbing and word splitting.

- remove package/iwd/S40iwd from .checkpackageignore

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

.checkpackageignore

@@ -487,7 +487,6 @@ package/irqbalance/S13irqbalance Shellcheck lib_sysv.Indent lib_sysv.Variables
 package/irrlicht/0001-override-CPPFLAGS-CXXFLAGS-and-CFLAGS-in-Makefile.patch lib_patch.Upstream
 package/irrlicht/0002-makefile-override-LDFLAGS-and-remove-obsolete-X11R6-.patch lib_patch.Upstream
 package/iucode-tool/S00iucode-tool lib_sysv.Variables
-package/iwd/S40iwd Shellcheck
 package/janus-gateway/0001-disable-ssp.patch lib_patch.Upstream
 package/kexec-lite/0001-clean-restart.patch lib_patch.Upstream
 package/keyutils/0001-fix-install-rule.patch lib_patch.Upstream

package/iwd/S40iwd

@@ -5,11 +5,13 @@ PIDFILE="/var/run/$DAEMON.pid"
 
 IWD_ARGS=""
 
+# shellcheck source=/dev/null
 [ -r "/etc/default/$DAEMON" ] && . "/etc/default/$DAEMON"
 
 start() {
 	printf 'Starting %s: ' "$DAEMON"
 	mkdir -p /tmp/iwd/hotspot
+	# shellcheck disable=SC2086 # we need the word splitting
 	start-stop-daemon --start --background --make-pidfile \
 		--pidfile "$PIDFILE" --exec "/usr/libexec/$DAEMON" \
 		-- $IWD_ARGS