Fix typos in IEvsEnumerator descriptive comment

IEvsEnumerator::openCamera had a typo and the incorrect name of a related
interface in one of the descriptive comments.  This fixes those issues
and updates the checksum for the interface.

Bug: 38508696
Test: build evs_app and evs default driver.
Change-Id: I24f3ca2bc3652711a4ee2ea9a37428d4bdafc509