west.yml: MCUboot synchronization from upstream

Update Zephyr fork of MCUboot to revision:
  bf5321bb6906e9e75b4c85b7c98b71c06ae52e90

Brings following Zephyr relevant fixes:

  - bf5321bb boot: zephyr: Remove reference to deprecated BT_CTLR
    option
  - 800868a9 bootutil: swap_scratch: Fix scratch scrambling
  - 16cfdaf3 boot: zephyr: Fix including asn1 when ed25519 is used

Signed-off-by: Jamie McCrae <[email protected]>
Signed-off-by: Johan Hedberg <[email protected]>

Author: nordicjm

west.yml

@@ -310,7 +310,7 @@ manifest:
       groups:
         - crypto
     - name: mcuboot
-      revision: 4e108f702b5322fb59344ae4976e3d73c973ef12
+      revision: bf5321bb6906e9e75b4c85b7c98b71c06ae52e90
       path: bootloader/mcuboot
       groups:
         - bootloader