Scale all StatusBarIconView status icons to 17dp

StatusBarIconView will scale status icons to 17dp regardless of the
intrinsic size of the drawable. It uses the intrinisc height of the
icon as that's the most visible when the icons are not the same heihgt.

Also change permission icons in PhoneStatusBarPolicy to use the same as
PrivacyType and guarantee consistency.

Test: observe existing icons, they are same size as before
Test: open camera and maps and observe permission icons, they are same
height as other icons
Test: change themes and check that icons change and are the right size

Fixes: 131851643

Change-Id: Ied8a2f1d96e6a0e5ee456f2babb2b68b803445c9