meta-digi-del: add sleep to suspend/resume script

This gives more time for the interfaces to resume.

This fixes a race condition where the script tries to bring up the
wireless interface before actually being available.

Signed-off-by: Javier Viguera <javier.viguera@digi.com>

meta-digi-del/recipes-core/busybox/busybox-1.20.2/suspend

@@ -100,6 +100,7 @@ if [ -f "${syspower}" ]; then
 
 	# Suspend the device
 	printf "mem" > ${syspower}
+	sleep .5
 
 	# Post-resume actions
 	resume_storage_devices