tz: Add tz_log driver

- Add tz_log platform device driver for 8960
- Add debugfs interface for accessing tz debug information

Change-Id: I227650742b03ea1a7953a5b50c1b93179f713813
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index e5f7449..fc27feb 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -1626,6 +1626,14 @@
 	  allocate physical memory which is used by bus performance hardware to
 	  dump performance data.
 
+config MSM_TZ_LOG
+	tristate "MSM Trust Zone (TZ) Log Driver"
+	depends on DEBUG_FS
+	help
+	  This option enables a driver with a debugfs interface for messages
+	  produced by the Secure code (Trust zone). These messages provide
+	  diagnostic information about TZ operation.
+
 config MSM_RPM_LOG
 	tristate "MSM Resource Power Manager Log Driver"
 	depends on DEBUG_FS