[turbofan] Add Symbol feedback to Equal/StrictEqual.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 1194472d29d198cf8eff7805e9e2c96574e789bb..1d0b668080ee73e2de744fa03a11bc16d5b3e79a 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1269,6 +1269,7 @@ class BinaryOperationFeedback {
 // to a more generic type when we combine feedback.
 // kSignedSmall        -> kNumber   -> kAny
 // kInternalizedString -> kString   -> kAny
+//                        kSymbol   -> kAny
 //                        kReceiver -> kAny
 // TODO(epertoso): consider unifying this with BinaryOperationFeedback.
 class CompareOperationFeedback {
@@ -1280,8 +1281,9 @@ class CompareOperationFeedback {
     kNumberOrOddball = 0x7,
     kInternalizedString = 0x8,
     kString = 0x18,
-    kReceiver = 0x20,
-    kAny = 0x7F
+    kSymbol = 0x20,
+    kReceiver = 0x40,
+    kAny = 0xff
   };
 };