add support 4g -- >ppp

hc

2023-11-24 2b26ab132d1b33b91c84c6d732456200e8c5ee77

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CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTPLUG_SPARSE=y
CONFIG_NOTIFIER_ERROR_INJECTION=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
CONFIG_MEMORY_HOTREMOVE=y