package/powerpc-utils: Add sha256 hash for the COPYING file
Suggested-by: Peter Korsgaard <peter@korsgaard.com>
CC: Joel Stanley <joel@jms.id.au>
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>