Apply suggestions from code review

Author: bader

clang/include/clang/Basic/Attr.td

@@ -1303,14 +1303,14 @@ def SYCLIntelMaxWorkGroupSize : InheritableAttr {
       return {getXDim(), getYDim(), getZDim()};
     }
     Optional<llvm::APSInt> getXDimVal(ASTContext &Ctx) const {
-	  return getXDim()->getIntegerConstantExpr(Ctx);
-	}
+      return getXDim()->getIntegerConstantExpr(Ctx);
+    }
     Optional<llvm::APSInt> getYDimVal(ASTContext &Ctx) const {
-	  return getYDim()->getIntegerConstantExpr(Ctx);
-	}
+      return getYDim()->getIntegerConstantExpr(Ctx);
+    }
     Optional<llvm::APSInt> getZDimVal(ASTContext &Ctx) const {
-	  return getZDim()->getIntegerConstantExpr(Ctx);
-	}
+      return getZDim()->getIntegerConstantExpr(Ctx);
+    }
   }];
   let Documentation = [SYCLIntelMaxWorkGroupSizeAttrDocs];
 }
@@ -2863,14 +2863,14 @@ def ReqdWorkGroupSize : InheritableAttr {
       return {getXDim(), getYDim(), getZDim()};
     }
     Optional<llvm::APSInt> getXDimVal(ASTContext &Ctx) const {
-	  return getXDim()->getIntegerConstantExpr(Ctx);
-	}
+      return getXDim()->getIntegerConstantExpr(Ctx);
+    }
     Optional<llvm::APSInt> getYDimVal(ASTContext &Ctx) const {
-	  return getYDim()->getIntegerConstantExpr(Ctx);
-	}
+      return getYDim()->getIntegerConstantExpr(Ctx);
+    }
     Optional<llvm::APSInt> getZDimVal(ASTContext &Ctx) const {
-	  return getZDim()->getIntegerConstantExpr(Ctx);
-	}
+      return getZDim()->getIntegerConstantExpr(Ctx);
+    }
   }];
   let Documentation = [ReqdWorkGroupSizeAttrDocs];
 }