[PATCH 4/6] arm64: add Cortex-A53 cache errata workaround

The ARM errata 819472, 826319, 827319 and 824069 define the same workaround for these hardware issues in certain Cortex-A53 parts. Use the new alternatives framework and the CPU MIDR detection to patch "cache clean" into "cache clean and invalidate" instructions if an affected CPU is detected at

[PATCH 4/6] arm64: add Cortex-A53 cache errata workaround

The ARM errata 819472, 826319, 827319 and 824069 define the same workaround for these hardware issues in certain Cortex-A53 parts. Use the new alternatives framework and the CPU MIDR detection to patch cache clean into cache clean and invalidate instructions if an affected CPU is detected at