Samsung fixes for v5.19 Both fixes are for issues present before v5.19 merge window: 1. Correct UART clocks on Exynos7885. Although the initial, fixed DTS commit is from v5.18, the issue will be exposed with a upcoming fix to Exynos7885 clock driver, so we need to correct the DTS earlier. 2. Fix theoretical OF node leak in Exynos machine code.