[automerger skipped] Merge "Let genrule have the entrance depend on signapk"...

[automerger skipped] Merge "Let genrule have the entrance depend on signapk" am: 76e225f9 am: 7479ab83 am: 0135e981 am: 7eb5fbc1 -s ours

am skip reason: Change-Id I63ae661b9b419ddc6e69ccfc9a29fd28b116c0b5 with SHA-1 d8442b4c is in history

Original change: https://android-review.googlesource.com/c/platform/build/+/1476658

Change-Id: I9c2a4d5737fb2b48524da7284b2460e62339f5b1