DatePicker is calling back its listener on init.
DatePicker is calling back its listener on init.

bug:3341515

1.Changed the callbeack registration to follow the spinners
  initialization.

Change-Id: I3baff68c295993f975beec2b376af88e32b24e20

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base