fs_config_dirs and fs_config_files miscalculates LOCAL_REQUIRED_MODULES

Misspelled fs_config_generate_extra_partition_list when used to
calculate LOCAL_REQUIRED_MODULES dependencies.  This resulted in
fs_config_dirs and fs_config_files failing to generate the vendor,
oem or odm variants (ie: fs_config_files_vendor)

Test: build generates correct fs_config override files.
Bug: 37721445
Bug: 36071012
Change-Id: I053dd5cdb357c7cea05a5ff63b0686bd0bc99df6