adbd: fix build breakage.

This broke because two CLs touching the Android.bp file both
independently passed presubmit, but failed when combined.

Clean up a misindentation while we're at it.

Bug: http://b/150032044
Bug: http://b/150032367
Test: mma in system/core/adb
Change-Id: I091ef9dec806c767ffb21a5fd73b2bb37ab29ff9
Merged-In: I091ef9dec806c767ffb21a5fd73b2bb37ab29ff9
(cherry picked from commit 6d949e89)