Fix ethernet enable / disable API

The ethernet APIs connectNetwork() / disconnectNetwork() are
inaccurately named. Physical link state cannot be changed by calling an
API. This change renames these functions to enableInterface and
disableInterface, respectively, to better reflect their intention and
behavior.

Test: atest EthernetManagerPermissionTest
Merged-In: I0f2866d09b745e7bdb261a1258f94cfd51223a8f
Change-Id: I0f2866d09b745e7bdb261a1258f94cfd51223a8f
1 file changed