Add disable_function_topology flag to disable loading function topologies #7450

Job	Run time
Sparse check	3m 53s
GCC static -fanalyzer	3m 19s
GCC build X86_64 with W=1	2m 38s
GCC build X86_64 with W=1 allmodconfig	1m 24s
GCC build i386	14m 59s
GCC build X86_64	19m 47s
GCC build arm64 allmodconfig	1m 30s
Clang build x86_64	4m 19s
GCC build arm64	20m 38s
	1h 12m 27s

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