west.yml: Update FAT FS driver revision to raise version to 0.14b

The commit updates revision of the Zephyr for of ELM Chan FAT FS
driver to the revision that updates source code to version 0.14b.

Signed-off-by: Dominik Ermel <[email protected]>

Author: de-nordic

west.yml

@@ -42,7 +42,7 @@ manifest:
       groups:
         - tools
     - name: fatfs
-      revision: 1d1fcc725aa1cb3c32f366e0c53d7490d0fe1109
+      revision: 94fcd6bfb3801ac0a5e12ea2f52187e0a688b90e
       path: modules/fs/fatfs
       groups:
         - fs