RCU rename v2.06 to v2.15

When repeatedly download IR codes from Axel, the buffer may be
corrupted and brick the RCU. v2.06 doesn't have this bug, so roll
back to v2.06 to avoid the damage.

Bug: 264841539
Test: Repeatedly download IR code from Axel and verify the brick
      issue doesn't happen.
Change-Id: Iedb6f76b63e6160eb8b7dfc044b4325abba8b120
1 file changed