west.yml: upgrade rimage to 3863e94fa5

Pull in following rimage changes:

3863e94fa5 Don't convert ROM addresses to cached aliases
1e0a85b44a config:tgl/tglh: Do not set cached/uncached address aliases
9b507ecc82 config: set cached and uncached aliases for affected platforms
def9d51d7d Fix regression - make default return code an error
d48ae7aada config: mtl: Set init_config for smart amp
b5d762290f config: tgl-cavs: set init_config for smart test
15ea48177a src: adsp_config: Use reserved bits for module init config
ec649f37d6 Convert all ELF addresses to cached for calculations

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

rimage

@@ -1 +1 @@
-Subproject commit 7bc3cfc946a04cbceebf7d0202a6d490c85dca72
+Subproject commit 3863e94fa5d361e434f404655dac17541dbf20c6

west.yml

@@ -34,7 +34,7 @@ manifest:
     - name: rimage
       repo-path: rimage
       path: sof/rimage
-      revision: 7bc3cfc946a04cbceebf7d0202a6d490c85dca72
+      revision: 3863e94fa5d361e434f404655dac17541dbf20c6
 
     - name: tomlc99
       repo-path: tomlc99