firmware: add missing line in Makefile

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Change-Id: I868f599899c7d78ae671ffba970aa5f82dbb6e79
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/2434
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
1 file changed