raven: fix the adaption to the new product override scheme

Change-Id: Id104e4c6eeb1c0c01b12d145ba9429b7eb232141
diff --git a/omni_raven.mk b/omni_raven.mk
index 8e5c768..0ea1ca3 100644
--- a/omni_raven.mk
+++ b/omni_raven.mk
@@ -30,7 +30,7 @@
 PRODUCT_BRAND := google
 
 PRODUCT_BUILD_PROP_OVERRIDES := \
-    BuildDesc=raven-user[[:space:]]15[[:space:]]AP3A.241005.015[[:space:]]12366759[[:space:]]release-keys \
+    BuildDesc="raven-user 15 AP3A.241005.015 12366759 release-keys" \
     BuildFingerprint=google/raven/raven:15/AP3A.241005.015/12366759:user/release-keys \
     DeviceProduct=raven