west.yml: update zephyr to 0837ad5be84

Total of 432 commits.

Changes include:

3df1ffe1d5b xtensa: mmu: Fix partition permission definitions
6249470b669 intel_adsp: ace30: mm: Set write permissions during memory
            mapping
e7f2e1412d5 soc: intel_adsp: set MMU permissions for .cold* sections

Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>

Author: tmleman

west.yml

@@ -43,7 +43,7 @@ manifest:
 
     - name: zephyr
       repo-path: zephyr
-      revision: 218de8dc676c424d81c3402e6262e5e326b84b28
+      revision: 0837ad5be847a386928e2164b8f81ba7938d98ec
       remote: zephyrproject
 
       # Import some projects listed in zephyr/west.yml@revision