Update ls-rcw to latest LSDK-20.04.
Update patch 0001 with a new one.
Drop patch 0002 since it had been integrated.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
We do not have to define package for each board, and
consider variant's building/installing.
It is easier to maintain ls-rcw with only one package
installing all boards RCW binaries as intermediate
files, each of which is just about hundreds of bytes.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
