Modified Matrix to work with MAX7221: changing latching from rising edge to falling edge.
Modified Matrix to work with MAX7221: changing latching from rising edge to falling edge.



Former-commit-id: 114a19c9a261b318cfe3daefb4135612617d720e
ricklon/chipKIT32-MAX,tintin304/chipKIT32-MAX,majenkotech/chipKIT32-MAX,ricklon/chipKIT32-MAX,EmbeddedMan/chipKIT32-MAX,chipKIT32/chipKIT32-MAX,EmbeddedMan/chipKIT32-MAX,majenkotech/chipKIT32-MAX,EmbeddedMan/chipKIT32-MAX,EmbeddedMan/chipKIT32-MAX,adamwolf/chipKIT32-MAX,majenkotech/chipKIT32-MAX,ricklon/chipKIT32-MAX,chipKIT32/chipKIT32-MAX,majenkotech/chipKIT32-MAX,EmbeddedMan/chipKIT32-MAX,adamwolf/chipKIT32-MAX,chipKIT32/chipKIT32-MAX,ricklon/chipKIT32-MAX,adamwolf/chipKIT32-MAX,EmbeddedMan/chipKIT32-MAX,tintin304/chipKIT32-MAX,chipKIT32/chipKIT32-MAX,tintin304/chipKIT32-MAX,ricklon/chipKIT32-MAX,tintin304/chipKIT32-MAX,majenkotech/chipKIT32-MAX,adamwolf/chipKIT32-MAX,chipKIT32/chipKIT32-MAX,EmbeddedMan/chipKIT32-MAX,tintin304/chipKIT32-MAX,adamwolf/chipKIT32-MAX,adamwolf/chipKIT32-MAX,ricklon/chipKIT32-MAX,adamwolf/chipKIT32-MAX,tintin304/chipKIT32-MAX,tintin304/chipKIT32-MAX,majenkotech/chipKIT32-MAX,chipKIT32/chipKIT32-MAX,majenkotech/chipKIT32-MAX,chipKIT32/chipKIT32-MAX,ricklon/chipKIT32-MAX