Revert "m7-common: use TARGET_ADDITIONAL_BOOTCLASSPATH define for IR framework"

This reverts commit c41b3108207cea36de9dd2cf4e77439548b50bdd.

Change-Id: Iab71c222e64e1d37ce6c41eca1b2c7d62e922d66
Merge "Revert "m7-common: use TARGET_ADDITIONAL_BOOTCLASSPATH define for IR framework"" into jb-mr2