Blackfin arch: Enable Write Back Cache on all Blackfin Boards

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/configs/BF538-EZKIT_defconfig b/arch/blackfin/configs/BF538-EZKIT_defconfig
index cb32f56..dd6ad6be 100644
--- a/arch/blackfin/configs/BF538-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF538-EZKIT_defconfig
@@ -306,8 +306,8 @@
 CONFIG_BFIN_DCACHE=y
 # CONFIG_BFIN_DCACHE_BANKA is not set
 # CONFIG_BFIN_ICACHE_LOCK is not set
-# CONFIG_BFIN_WB is not set
-CONFIG_BFIN_WT=y
+CONFIG_BFIN_WB=y
+# CONFIG_BFIN_WT is not set
 # CONFIG_MPU is not set
 
 #