[sb] swap order of wifi and cell icons

This moves the wifi icon to be after the cell icon. Requested by UX.

Since the array is read directly from the config.xml, we can't use the
new_status_bar_icons flag for this.

Test: manual
Fixes: 408005662
Flag: EXEMPT just a config change
Change-Id: Iedeecf93eb7ee58042814cafa498b762ffa632ae