west.yml: Update zephyr to 8bdf533d7647

This brings in sdma fix:

8bdf533d7647 dma: nxp: sdma: Initialize channel capacity with zero

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>

Author: dbaluta

west.yml

@@ -43,7 +43,7 @@ manifest:
 
     - name: zephyr
       repo-path: zephyr
-      revision: 0837ad5be847a386928e2164b8f81ba7938d98ec
+      revision: 8bdf533d76471873090aad3d511e037f14ee7cad
       remote: zephyrproject
 
       # Import some projects listed in zephyr/west.yml@revision