soc: st: stm32wbax: refcount backup domain accesses requests

Add LINKLAYER_PLAT_EnableBackupDomainAccess()  and
LINKLAYER_PLAT_DisableBackupDomainAccess() to use Zephyr resources
that use a reference counter for access requests, for enabling
and disabling access the BackupDomain resources.

Bump hal_stm32 module to the revision integrating related stm32wba
BLE updates.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>