Blackfin arch: convert BF5{18,27,48}_FAMILY to CONFIG_BF{51,52,54}x

convert BF5{18,27,48}_FAMILY to CONFIG_BF{51,52,54}x as the defines
are redundant in these cases

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

6 files changed