Put "%expect 0" directives in the .y files

With the exception of GHC's main Parser.y(.pp), which has 2
reduce/reduce conflicts

3 files changed, 3 insertions, 0 deletions

diff --git a/utils/ext-core/Parser.y b/utils/ext-core/Parser.y
index add3ef0b46..67db7bc523 100644
--- a/utils/ext-core/Parser.y
+++ b/utils/ext-core/Parser.y
@@ -8,6 +8,7 @@ import Lex
 }
 
 %name parse
+%expect 0
 %tokentype { Token }
 
 %token
diff --git a/utils/genprimopcode/Parser.y b/utils/genprimopcode/Parser.y
index 7ebe2a8ae3..9bf20c2dd7 100644
--- a/utils/genprimopcode/Parser.y
+++ b/utils/genprimopcode/Parser.y
@@ -16,6 +16,7 @@ import Syntax
 }
 
 %name      parsex
+%expect    0
 %tokentype { Token }
 %monad     { ParserM }
 %lexer     { lex_tok } { TEOF }
diff --git a/utils/hpc/HpcParser.y b/utils/hpc/HpcParser.y
index cf1d156c6e..b99e3246cf 100644
--- a/utils/hpc/HpcParser.y
+++ b/utils/hpc/HpcParser.y
@@ -12,6 +12,7 @@ import HpcLexer
 }
 
 %name parser
+%expect 0
 %tokentype { Token }
 
 %token