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/Kconfig b/arch/arm/mach-msm/Kconfig
index 6f8d987..88004af 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -1368,6 +1368,15 @@
 	  applications for passing data through the
 	  SDIO interface.
 
+config MSM_HSIC_TTY
+	bool "HSIC TTY Driver"
+	default n
+	help
+	  Provides a TTY driver HSIC TTY
+	  This driver can be used by user space
+	  applications for passing data through the
+	  HSIC interface.
+
 config MSM_SMD_TTY
 	bool "SMD TTY Driver"
 	depends on MSM_SMD