cmsis: backport cmsis_6 IAR fix to 5.9.0

Currently IAR is broken with CMSIS 5.9.0 and we need a backport
of ARM-software/CMSIS_6#102 into CMSIS 5.9.0

Signed-off-by: Robin Kastberg <[email protected]>

Author: RobinKastberg

west.yml

@@ -117,7 +117,7 @@ manifest:
       groups:
         - babblesim
     - name: cmsis
-      revision: 4b96cbb174678dcd3ca86e11e1f24bc5f8726da0
+      revision: d1b8b20b6278615b00e136374540eb1c00dcabe7
       path: modules/hal/cmsis
       groups:
         - hal