reload library based on fw_image_flag in fw manifest #5541

Job	Run time
Clang build x86_64	5m 6s
GCC static -fanalyzer	6m 28s
GCC build arm64 allmodconfig	3m 15s
GCC build arm64	31m 16s
GCC build i386	20m 24s
GCC build X86_64	22m 42s
GCC build X86_64 with W=1	3m 39s
GCC build X86_64 with W=1 allmodconfig	3m 23s
Sparse check	7m 15s
	1h 43m 28s

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