simpleperf: binary_cache_builder.py: explictly create binary_cache

Otherwise, the binary_cache directory may not be created, making the
script crash in create_build_id_list().

Bug: 274618295
Test: run test.py -p TestNativeProfiling.test_profile_native_program
Change-Id: I46f8adeca92cccc70583f238012e826ba190df61
1 file changed