igor.masar 84a5812d55 refactor(usb_phy): Move USB PHY implementation to esp_hw_support ...

Moved USB PHY source and headers from `usb/` to `esp_hw_support/`
to better reflect their hardware-specific nature.
Replaced use of public GPIO driver APIs with internal LL (Low-Level) APIs
for more precise hardware control and alignment with ESP-IDF HAL best practices.
Deleted deprecated PHY helper functions.
Consolidated all SoC-specific declarations under `usb_periph.h`.

BREAKING CHANGE: deprecated USB PHY APIs have been removed; update
callers to use the new interfaces in esp_hw_support/usb_phy.h

2025-07-10 14:52:47 +02:00

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