SYCL: fix errors on Windows caused by adding sycl::intel::detail namespace

Inside sycl::intel namespce for the expressions like detail::something,
compiler looks for something in sycl::intel::detail instead of sycl::detail.
Expressions detail::something were changed to sycl::detail::something

Signed-off-by: Vyacheslav N Klochkov <[email protected]>

Author: v-klochkov