Add OSPI Flash support

[jeremy-baker]

Summary by cubic

Adds OSPI flash support on RA8D2 EK, including driver initialization at startup and switching the flash from SPI to OPI mode. Also updates clocks, pin security, upgrades to FSP 6.3.0, and adds a J-Link reset script for reliable programming.

• New Features

  • Integrated OSPI-B driver with new modules (ospi_b_ep.* and ospi_b_commands.*).
  • Initialized OSPI in hal_entry.c, reads device ID, then switches the flash to OPI mode.
  • Added RA8x1_Reset_OSPI.JLinkScript to reset the flash before programming.
  • Configured OCTACLK from PLL2P (div/3) and secured OSPI-related pins.
  • Improved cache handling: added D-Cache clean+invalidate for Cortex-M85 in src/dave2d_cache_management.c.
  • Moved LVGL work memory to internal SRAM; removed custom SDRAM placement and reduced size.

• Migration

  • Use the new J-Link script in your launch config to ensure the flash reset sequence runs.
  • Ensure OCTACLK and OSPI pins are enabled in your board config.
  • After first boot, the flash is set to OPI; subsequent operations should use OPI mode.

^{Written for commit 5f520fa. Summary will update on new commits.}

[cubic-dev-ai]

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