msm: add support for remote debugger driver

The Remote Debugger Driver allows a debugger running on host PC to
communicate with a remote stub running on peripheral subsystems by
implementing a shared memory based transport mechanism. Add support
for the driver.

Change-Id: I0c8a498682d224ee5d5a275c228a75939675095b
Acked-by: Vivek Iyer <viyer@qti.qualcomm.com>
Acked-by: Mahesh Rohera <mrohera@qti.qualcomm.com>
Acked-by: Jay Jayanna <jjayanna@qti.qualcomm.com>
Signed-off-by: Aparna Das <adas@codeaurora.org>
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index e2864ec..89af79a 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -681,6 +681,13 @@
 	help
 	  Enter device id for targeted sdio device, this may be overwritten by
 	  module parameters.
-.
+
+config MSM_RDBG
+        tristate "Qualcomm Remote debug driver"
+        depends on MSM_AUDIO_QDSP6 || MSM_AUDIO_QDSP6V2
+        help
+          Implements a shared memory based transport mechanism that allows
+          for a debugger running on a host PC to communicate with a remote
+	  stub running on peripheral subsystems such as the ADSP, MODEM etc.
 endmenu