recovery init: add rngd to increase the quantity of entropy

Signed-off-by: Tatiana Leon <tatiana.leon@digi.com>

meta-digi-dey/recipes-core/recovery/recovery-initramfs.bb

@@ -59,4 +59,5 @@ FILES_${PN} = "/"
 
 RDEPENDS_${PN}_append_ccimx6 = " \
     cryptsetup \
+    rng-tools \
 "

meta-digi-dey/recipes-core/recovery/recovery-initramfs/recovery-initramfs-init

@@ -417,6 +417,11 @@ mkdir -p /var/lock
 # Set kernel console loglevel.
 sysctl -q -w kernel.printk=4
 
+if [ "$(is_nand)" = "no" ]; then
+	# Launch 'rngd' to feed random data to kernel entropy pool
+	mkdir -p /var/run && rngd
+fi
+
 # Start psplash.
 psplash &