tests: Fix gcov typo for tmp105-test Commit 6e9989034b176a8e4cfdccd85892abfa73977ba7 introduced a new qtest test case but misspelled gcov, leading to no coverage analysis. Fix it. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>