MdeModulePkg/TerminalDxe: Return success if device not support SetControl

[huama-intel]

MdeModulePkg/TerminalDxe: Return success if device not support SetControl

Description

Some serial device may not support SetControl.
Ignore the error from SetControl if EFI_UNSUPPORTED is return.

We see some compatible issue related to PR: https://github.com/tianocore/edk2/pull/6106/files
this patch can help on the compatible issue with some serial drivers which do not support SetControl.

• Breaking change?
  • Breaking change - Does this PR cause a break in build or boot behavior?
  • Examples: Does it add a new library class or move a module to a different repo.
• Impacts security?
  • Security - Does this PR have a direct security impact?
  • Examples: Crypto algorithm change or buffer overflow fix.
• Includes tests?
  • Tests - Does this PR include any explicit test code?
  • Examples: Unit tests or integration tests.

How This Was Tested

<Describe the test(s) that were run to verify the changes.>

Integration Instructions

<Describe how these changes should be integrated. Use N/A if nothing is required.>