eth: Add promiscious mode support to stm32 ethernet abstraction

Simply adds the definitions in the stm32 hal to define ethernet
promiscious mode.

Signed-off-by: Brad Rushbrook <rushybrook@gmail.com>

Fixes error and resetting promisc mode, adds support for STM23H7x

Signed-off-by: Brad Rushbrook <rushybrook@gmail.com>

Co-authored-by: Alexander Kozhinov <AlexanderKozhinov@yandex.com>

Readability improvement; coding-style compliance

Signed-off-by: Brad Rushbrook <rushybrook@gmail.com>

Co-authored-by: Erwan Gouriou <erwan.gouriou@linaro.org>