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同#I39AM8:【21.03】arm（TaiShan 2280 V2）物理机出现内核报错swapper/0: page allocation failure

合入如下补丁解决：
1adebbd34f0f of: unittest: Fix build on architectures without CONFIG_OF_ADDRESS
ce259e55ae7a mm: Remove examples from enum zone_type comment
e196efb090ad arm64: mm: Set ZONE_DMA size based on early IORT scan
a06deaa7d600 arm64: mm: Set ZONE_DMA size based on devicetree's dma-ranges
b7795756afcd of: unittest: Add test for of_dma_get_max_cpu_address()
13dc4b774607 of/address: Introduce of_dma_get_max_cpu_address()
4395648c5284 arm64: mm: Move zone_dma_bits initialization into zone_sizes_init()
beb42167fd0b arm64: mm: Move reserve_crashkernel() into mem_init()