enchilada: move remoteproc modules to vendor

If the adsp is booted during the initramfs stage then it will fail to
find firmware and never probe again, move the modules to vendor so that
it won't probe until firmware is available.

Also re-enable loading modules by modalias so that the modules get
loaded from vendor.
diff --git a/ueventd.common.rc b/ueventd.common.rc
index 47834c1..b87dccf 100644
--- a/ueventd.common.rc
+++ b/ueventd.common.rc
@@ -1,4 +1,4 @@
-#modalias_handling enabled
+modalias_handling enabled
 
 /dev/sw_sync              0660   root       graphics