Bibake is currently too 'chatty' when hash equivalence is enabled. Fix
this by only printing the log output if a rehash happens and it matches
an sstate object.
Also, pass a summary option to the hash checking function. This was
already changed to a mechanism which allows addition of new parameters
so this should be backwards and forwards compatible.
(Bitbake rev: 0c4515603ad08775e3b0404cba5374367e49f236)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>