drivers: stm32_omm: add OSPI Memory Manager driver

This patch adds OSPI Memory Manager driver.
It handles:
- IOM configuration
- OSPIs address mapping
- IOM sub-system firewall configuration

Signed

drivers: stm32_omm: add OSPI Memory Manager driver

This patch adds OSPI Memory Manager driver.
It handles:
- IOM configuration
- OSPIs address mapping
- IOM sub-system firewall configuration

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Co-developed-by: Christophe Kerello <christophe.kerello@foss.st.com>
Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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