arch: arm: cortex_r: Initialise VFP D32 registers for DCLS
arch: arm: cortex_r: Initialise VFP D32 registers for DCLS

This commit updates the Cortex-R reset routine to initialise
(synchronise) the VFP D16-D31 registers when Dual-redundant Core
Lock-step (DCLS) is enabled.

Signed-off-by: Stephanos Ioannidis <dc76e9f0c0006e8f919e0c515c66dbba3982f785@stephanos.io>

galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr