fix: add missing -DBOARD_HAS_PSRAM to qio_opi boards

[coderabbitai]

Summary

Five board JSON manifests with memory_type=qio_opi were missing the -DBOARD_HAS_PSRAM flag in build.extra_flags, even though they all have OPI PSRAM. This caused the PSRAM detection in builder/frameworks/espidf.py to rely on the memory_type string as a fallback rather than the explicit flag.

Affected Boards

File	Board Name
boards/atd147_s3.json	ArtronShop ATD1.47-S3
boards/dfrobot_romeo_esp32s3.json	DFRobot Romeo ESP32-S3
boards/lilygo-t-display-s3.json	LilyGo T-Display-S3
boards/m5stack-atoms3u.json	M5Stack AtomS3U
boards/nebulas3.json	Kinetic Dynamics Nebula S3

Change

Added -DBOARD_HAS_PSRAM to build.extra_flags for each affected board.

Related

Identified during review of PR #477 (Refactor: Hybrid Compile sdkconfig handling).

Requested by @Jason2866.

[coderabbitai]

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