releasetools: Support erofs on non-dynamic partitions

Change-Id: Ibeb228132d3c0cc1d7407c2a40498b72580c81d5
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 4f70a42..f7eb7fc 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -3436,7 +3436,8 @@
     "ext4": "EMMC",
     "emmc": "EMMC",
     "f2fs": "EMMC",
-    "squashfs": "EMMC"
+    "squashfs": "EMMC",
+    "erofs": "EMMC"
 }