Blackfin arch: build jtag tty driver as a module by default

Signed-off-by: Mike Frysinger <vapier.adi@gmail.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 a1f766b..cb32f56 100644
--- a/arch/blackfin/configs/BF538-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF538-EZKIT_defconfig
@@ -726,7 +726,7 @@
 CONFIG_SIMPLE_GPIO=m
 # CONFIG_VT is not set
 # CONFIG_DEVKMEM is not set
-# CONFIG_BFIN_JTAG_COMM is not set
+CONFIG_BFIN_JTAG_COMM=m
 # CONFIG_SERIAL_NONSTANDARD is not set
 
 #