PACKAGECONFIG flag code only handles that when it has 3 or 4 items in flag,
it may have a stale data if some flags doesn't need DEPENDS and RDEPENDS.
(From OE-Core rev: 884cab0428cff2ffd070b6f36b688ca9851fbe43)
Signed-off-by: Yao Zhao <yao.zhao@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>