Enable prebuilt ELF check for all targets

This commit enables prebuilt ELF checks on ALL targets.

If this commit breaks your target, you may triage the breakage by adding
the following setting to your `BoardConfig.mk`:

    BUILD_BROKEN_PREBUILT_ELF_FILES := true

And then fix the problem with the instructions:

    https://source.android.com/devices/architecture/vndk/abi-use-check

Bug: 141176116
Bug: 145925470
Test: for t in ${ALL_TARGETS}; do lunch $t; make check-elf-files; done
Change-Id: I62e0269074afe1d685cb63d5f8953a2acf03f03e

core/check_elf_file.mk

@@ -40,13 +40,7 @@ $(check_elf_files_stamp): $(my_prebuilt_src_file) $(my_check_elf_file_shared_lib
 
 ifneq ($(strip $(LOCAL_CHECK_ELF_FILES)),false)
 ifneq ($(strip $(BUILD_BROKEN_PREBUILT_ELF_FILES)),true)
-# TODO(b/141176116): Remove the PRODUCT_CHECK_ELF_FILES condition below and
-# cover `make droid` targets after everything goes well with `make checkbuild`
-# targets.
-ifneq ($(PRODUCT_CHECK_ELF_FILES)$(CHECK_ELF_FILES),)
 $(LOCAL_BUILT_MODULE): $(check_elf_files_stamp)
-endif  # PRODUCT_CHECK_ELF_FILES or CHECK_ELF_FILES
-
 check-elf-files: $(check_elf_files_stamp)
 endif  # BUILD_BROKEN_PREBUILT_ELF_FILES
 endif  # LOCAL_CHECK_ELF_FILES