[MLIR] Add missing memory read effect on memref.reshape (#117130)

The memory read effect on a memref.reshape argument was missing. This in
turn led to
analyses relying on memory effects making incorrect conclusions.

Author: bondhugula

mlir/include/mlir/Dialect/MemRef/IR/MemRefOps.td

@@ -1529,7 +1529,8 @@ def MemRef_ReshapeOp: MemRef_Op<"reshape", [
   }];
 
   let arguments = (ins AnyRankedOrUnrankedMemRef:$source,
-                       MemRefRankOf<[AnySignlessInteger, Index], [1]>:$shape);
+                       Arg<MemRefRankOf<[AnySignlessInteger, Index], [1]>,
+                       "dynamically-sized shape", [MemRead]>:$shape);
   let results = (outs AnyRankedOrUnrankedMemRef:$result);
 
   let builders = [OpBuilder<