Changes the default PACKAGE_DEBUG_SPLIT_STYLE to generate separate
source and debug packages. SDKIMAGE_FEATURES is updated to include the
source packages so that there is not change for the SDK contents.
[YOCTO #12931]
(From OE-Core rev: 8df14b678e44cc749b361224af05ccbcfa9ae9b5)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>