c2a: Extend unquote() to single quotes

Bug: 243662244
Test: -
Change-Id: I4de409b3135369425f8fa934f490e701505cd55d
diff --git a/scripts/cargo2android.py b/scripts/cargo2android.py
index 77ddee4..8f2ccc6 100755
--- a/scripts/cargo2android.py
+++ b/scripts/cargo2android.py
@@ -182,7 +182,7 @@
 
 
 def unquote(s):  # remove quotes around str
-  if s and len(s) > 1 and s[0] == '"' and s[-1] == '"':
+  if s and len(s) > 1 and s[0] == s[-1] and s[0] in ('"', "'"):
     return s[1:-1]
   return s