ks8695: move serial driver to drivers/serial

add CONFIG_KS8695_SERIAL to activate the driver

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 619d9da..95255df 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -34,6 +34,7 @@
 COBJS-$(CONFIG_S3C64XX) += s3c64xx.o
 COBJS-$(CONFIG_SYS_NS16550_SERIAL) += serial.o
 COBJS-$(CONFIG_IXP_SERIAL) += serial_ixp.o
+COBJS-$(CONFIG_KS8695_SERIAL) += serial_ks8695.o
 COBJS-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
 COBJS-$(CONFIG_MX31_UART) += serial_mx31.o
 COBJS-$(CONFIG_NETARM_SERIAL) += serial_netarm.o