copied over files, not modified properly yet
Squashing lots of define errors to get ethernet.c working
quick path rename
Fix STM32_EMAC_BASE (and ICACHE/DCACHE Bases). Enable ETH, ETHTX, and ETHRX with CONFIG_STM32H5_ETHMAC (like H7 does).
Fixed stm32_get_uniqueid
Previously, an exception occurred as a result of calling this function. The problem turned out to be this line: uniqueid[i] = *((uint8_t *)(STM32_SYSMEM_UID) + i);. Dereferencing a 32-bit register as a 8-bit register seemed to be causing this issue. I think this function is better anyway, fewer register accesses and loop iterations.
Turn on SBS peripheral when using Ethernet
The SBS peripheral is required to be turned on because the ETH_SEL_PHY bits need to be set. Without turning this on, RMII mode is not possible. MII may not work either.
Style Updates
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