sqlite3: make CFLAGS consistent across native, nativesdk and target cases
The previous simplification:
https://git.openembedded.org/openembedded-core/commit/?id=
604777acfc54d285f315b622bd147ed02d55d6fd
looked OK but didn't actually work as expected. The native and
nativesdk classes re-set CFLAGS after the += has been applied and
so any modifications made via += are lost. Use _append instead.
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
