Stm32h5 support

[AlexLanzano]

No description provided.

[Copilot]

Pull request overview

Adds STM32H5 (STM32H563ZI Nucleo) platform support to wolfHAL by introducing STM32H5-specific drivers/aliases and a new board integration that is built and exercised in CI.

Changes:

• Introduce STM32H5 RCC/SPI/RNG/Flash drivers plus STM32H5 GPIO/UART alias headers/sources.
• Add STM32H563xx convenience device macros and a new stm32h563zi_nucleo board (startup, linker script, board init).
• Update flash test pattern/alignment and include the new board in the CI matrix.

Reviewed changes

Copilot reviewed 23 out of 23 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
wolfHAL/uart/stm32h5_uart.h	UART alias layer mapping STM32H5 names to STM32WB UART implementation.
src/uart/stm32h5_uart.c	STM32H5 UART implementation reuse via include-alias of stm32wb_uart.c.
wolfHAL/gpio/stm32h5_gpio.h	GPIO alias layer mapping STM32H5 names/constants to STM32WB GPIO.
src/gpio/stm32h5_gpio.c	STM32H5 GPIO implementation reuse via include-alias of stm32wb_gpio.c.
src/gpio/stm32wb_gpio.c	Fix alt-function register programming to avoid 64-bit AFR access.
wolfHAL/spi/stm32h5_spi.h	Public STM32H5 SPI config and API declarations.
src/spi/stm32h5_spi.c	New STM32H5 SPI driver implementation using H5 register layout.
wolfHAL/rng/stm32h5_rng.h	STM32H5 RNG public interface/docs and config struct.
src/rng/stm32h5_rng.c	STM32H5 RNG driver with NIST configuration and data generation.
wolfHAL/flash/stm32h5_flash.h	STM32H5 flash public interface/config (128-bit programming, 8KB sectors).
src/flash/stm32h5_flash.c	STM32H5 flash driver implementation (unlock/lock/read/write/erase).
wolfHAL/clock/stm32h5_rcc.h	STM32H5 RCC public config structs, enums, and API.
src/clock/stm32h5_rcc.c	STM32H5 RCC implementation (HSI/PLL init, clock gating, rate calc, HSI48 ext).
wolfHAL/platform/st/stm32h563xx.h	STM32H563xx device/clock-gate convenience macros for board configs.
wolfHAL/platform/arm/cortex_m33.h	Cortex-M33 SysTick device macro for board timer init.
boards/stm32h563zi_nucleo/Makefile.inc	Build integration for the new board/platform and driver selection.
boards/stm32h563zi_nucleo/board.h	Board-level device declarations and flash test address/sector size.
boards/stm32h563zi_nucleo/board.c	Board initialization (flash latency, clocks, peripheral init, device configs).
boards/stm32h563zi_nucleo/ivt.c	Startup/interrupt vector table for STM32H563.
boards/stm32h563zi_nucleo/linker.ld	Memory map and sections for STM32H563 board builds.
tests/flash/test_flash.c	Align flash write/read test payload to work with stricter flash programming requirements.
docs/writing_a_driver.md	Document the alias-driver pattern for reusing identical peripherals across platforms.
.github/workflows/ci.yml	Add stm32h563zi_nucleo to CI build matrix.

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