target: fix copying of licenses for SDK/toolchain
The SDK and target/toolchain copy the license file into their
directories. During the rename/move from LICENSE to a LICENSES
folder, this has not been updated.
Update it now, and include the new COPYING file.
While at it, improve formatting/indent.
Fixes: 882e3014610b ("LICENSES: include all used licenses in
LICENSES directory")
Signed-off-by: Adrian Schmutzler <[email protected]>