[SYCL] Add overload of select for bool (#6000)

Addresses the common case of sycl::select(a, b, c) where c is a bool.

Author: Pennycook

sycl/include/CL/sycl/builtins.hpp

@@ -1306,6 +1306,13 @@ detail::enable_if_t<detail::is_gentype<T>::value, T> bitselect(T a, T b,
   return __sycl_std::__invoke_bitselect<T>(a, b, c);
 }
 
+// sgentype select (sgentype a, sgentype b, bool c)
+template <typename T>
+detail::enable_if_t<detail::is_sgentype<T>::value, T> select(T a, T b,
+                                                             bool c) __NOEXC {
+  return __sycl_std::__invoke_select<T>(a, b, static_cast<int>(c));
+}
+
 // geninteger select (geninteger a, geninteger b, igeninteger c)
 template <typename T, typename T2>
 detail::enable_if_t<