Samsung DTS ARM64 changes for v6.3 1. Add L2 cache properties (Exynos, Tesla FSD). 2. Tesla FSD: add Bosch MCAN (CAN bus), sound card (audio card with codec and I2S controllers), system controller nodes. 3. Tesla FSD: correct pin pull up/down properties to match recommendation in user manual. 4. Minor cleanups: use dedicated/specific sysreg compatibles, fix dtbs_check warnings, drop unsupported properties1