serial: protect uart_port_dtr_rts() in uart_shutdown() too

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2024-50058 · Microsoft / collected KEV context

cve-program · CVE-2024-50058

• https://git.kernel.org/stable/c/2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d
• https://git.kernel.org/stable/c/399927f0f875b93f3d5a0336d382ba48b8671eb2
• https://git.kernel.org/stable/c/d7b5876a6e74cdf8468a478be6b23f2f5464ac7a
• https://git.kernel.org/stable/c/e418d91195d29d5f9c9685ff309b92b04b41dc40
• https://git.kernel.org/stable/c/76ed24a34223bb2c6b6162e1d8389ec4e602a290
• https://git.kernel.org/stable/c/602babaa84d627923713acaf5f7e9a4369e77473

No related operational record is retained in the current change model.