Move Emergency call button

This is google issue because in Q DecorView (base of CryptKeeper view)
has added Navigation bar forcefully due to which Emergency call button
was hidden on CryptKeeper view.
Made changes to shift ECC button above navigation bar.
Hence it will show just below CryptKeeper password entry view pattern/pin/password).

Bug: 142626673
Test: Manual

Change-Id: If60fad3936bc67adcf26019bdf16975b5706be83