fix building of otacerts.zip

Was using a variable which was only defined inside the rule, outside
the rule.  Change to use the correct variable.
1 file changed
tree: 26b001d18e15906fdc448f4ff264655e7f248508
  1. core/
  2. libs/
  3. target/
  4. tools/
  5. buildspec.mk.default
  6. cleanspec.mk
  7. envsetup.sh