[PATCH 0/6] Fix Exynos4210 DMA support

[Guenter Roeck]

Commit 59520dc65e ("hw/arm/exynos4210: Add DMA support for the Exynos4210")
introduced DMA support for Exynos4210. Unfortunately, it never really
worked. DMA interrupt line and polarity was wrong, and the serial port
needs extra code to support DMA. This patch series fixes the problem.