Consider mInitialScale when setting min zoom scale.
Consider mInitialScale when setting min zoom scale.

This fixes CTS test failure.

issue: 4056256
Change-Id: Iee4adba2e462f5e0e79cf359e5b6a1531eafcdd8

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