intel-adsp: (cosmetic) re-group Kconfig options

[lyakh]

Group MM driver options together in Intel ADSP configurations.

[Copilot]

Pull Request Overview

This is a cosmetic reorganization PR that groups Memory Management (MM) driver configuration options together in Intel ADSP board configuration files. The change improves configuration file organization without affecting functionality.

• Move CONFIG_MM_DRV_INTEL_VIRTUAL_REGION_COUNT=2 from various sections to group it with other MM driver options
• Maintain consistent ordering across all Intel ADSP board configurations

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
intel_adsp_ace30_wcl.conf	Moved MM virtual region count config to group with other MM driver options
intel_adsp_ace30_ptl.conf	Moved MM virtual region count config to group with other MM driver options
intel_adsp_ace20_lnl.conf	Moved MM virtual region count config to group with other MM driver options
intel_adsp_ace15_mtpm.conf	Moved MM virtual region count config to group with other MM driver options

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[lgirdwood]

@lrudyX this is a cosmetic cleanup, so not expecting a failure. Good to merge ?