RFR: 8330026: Serial: Move some includes to vmStructs_serial.hpp

[Albert Mingkun Yang]

On Wed, 10 Apr 2024 12:50:36 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Trivial moving some Serial related headers.

Thanks for review.

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PR Comment: https://git.openjdk.org/jdk/pull/18718#issuecomment-2050362349