feat(stm32mp1): add RNG initialization in BL2 for STM32MP13

Initialize RNG driver at platform level for STM32MP13.

Change-Id: I64832de43e5f6559a12e26680142db54c88f0b9e
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@foss.st.com>
2 files changed