onclite: Allow ELF prebuilts in PRODUCT_COPY_FILES.

 * ELF prebuilts were banned in PRODUCT_COPY_FILES starting
   May 11th. See b/156534160 for long-term fix which should
   override this change.

Change-Id: Icd25b40ca4e4285319775046a1b70de30572be07

BoardConfig.mk

@@ -35,6 +35,7 @@ TARGET_BOARD_SUFFIX := _64
 
 # Build broken
 BUILD_BROKEN_DUP_RULES := true
+BUILD_BROKEN_ELF_PREBUILT_PRODUCT_COPY_FILES := true
 
 # AVB
 BOARD_AVB_ENABLE := true