kernel-yocto: make SRC_URI defconfig removal more specific
commit
7e98c295c1bb511e [kernel-yocto: ensure that only a single
defconfig is processed] has an overly broad replacement strategy
for 'defconfig' and hence will chop up any fragment name that
happens to contain that string.
If we change the processing to split on whitespace and drop
any full work 'defconfig' fragments, we'll get the behaviour
we want (no duplicate defconfigs, but fragments with defconfig
in their name are fine).
[YOCTO #12487]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
