Migration guide to Zephyr v4.5.0 (Working Draft)

This document describes the changes required when migrating your application from Zephyr v4.4.0 to Zephyr v4.5.0.

Any other changes (not directly related to migrating applications) can be found in the release notes.

Common 

The Kconfig options CONFIG_SRAM_SIZE and CONFIG_SRAM_BASE_ADDRESS have been deprecated, boards should instead use the devicetree zephyr.sram chosen node to specify the RAM node which will be used (whose values populated the Kconfig values). If either option is manually adjusted, it will cause CONFIG_SRAM_DEPRECATED_KCONFIG_SET to be set which indicates this deprecation.

S32K344: The pinmux header file for this SoC was renamed from S32K344-172MQFP-pinctrl.h to S32K344_K324_K314_172HDQFP-pinctrl.h. Out-of-tree boards must update their include directive accordingly:
```
#include <nxp/s32/S32K344_K324_K314_172HDQFP-pinctrl.h>
```

CONFIG_MBEDTLS_SSL_EARLY_DATA is now an explicit opt-in and is no longer implicitly enabled by CONFIG_MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED. Out-of-tree applications or board configurations that rely on TLS 1.3 PSK early data (0-RTT) must now explicitly enable CONFIG_MBEDTLS_SSL_EARLY_DATA.
CONFIG_PSA_CRYPTO_CLIENT has been removed as it was a duplicate of CONFIG_PSA_CRYPTO. If you were using it, use CONFIG_PSA_CRYPTO instead. (GitHub #108960)
Interface CMake library mbedTLS has been renamed to mbedtls_iface. The former is kept as an alias to the latter for backward compatibility, but it will be removed in future releases.