vibrator: use package as name

In order to provide a more descriptive name, and to be consistent
with HIDL, the stable AIDL package names are switching from
vintf-vibrator format to the package format
(android.hardware.vibrator).

Bug: N/A
Test: all build time
Change-Id: I60b85ed6c69190bcd287403408e31ea6643cee3e