Added 'wic' to the list image types supported by targetcontrol.
This is a preparation for booting and testing wic images
with oe-selftest.
[YOCTO #8498]
(From OE-Core rev: 7dda053fbd1ea1354b7720cfa691470ba88ef5b9)
(From OE-Core rev: 4b84328d3cd0d87ad146f034b58f68a5158313d7)
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>