misc: ti-st: Kconfig & Makefile for TI_ST

Add the Kconfig and the Makefile for the TI_ST driver.
TI_ST driver is the line discipline driver for the Texas Instrument's
WiLink chipsets.
Also add the ti-st folder to list of drivers under drivers/misc.

Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 255a80d..ab3353a 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -35,3 +35,4 @@
 obj-y				+= cb710/
 obj-$(CONFIG_VMWARE_BALLOON)	+= vmware_balloon.o
 obj-$(CONFIG_ARM_CHARLCD)	+= arm-charlcd.o
+obj-y				+= ti-st/