msm: add hsic_tty driver

hsic_tty driver is using for bypass diag packet to modem
with userspace application.

Change-Id: I412691016a208df41a38a6e98292a5223024166a
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 39c0a26..76c8579 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -121,6 +121,8 @@
 endif
 endif
 endif
+
+obj-$(CONFIG_MSM_HSIC_TTY) += hsic_tty.o
 obj-$(CONFIG_MSM_SDIO_TTY) += sdio_tty.o
 obj-$(CONFIG_MSM_SMD_TTY) += smd_tty.o
 obj-$(CONFIG_MSM_SMD_QMI) += smd_qmi.o