platform: add LANE_CTL register definition

DSI LANE_CTL register is used to control lane status, in
some cases we need control whether a lane should be kept
in HS or LP modes.

CRs-fixed: 783723
Change-Id: I31f52cf4313b5e93cab9003d02f0add1a85c313a
diff --git a/platform/msm8994/include/platform/iomap.h b/platform/msm8994/include/platform/iomap.h
index 28ae75a..bb9709f 100644
--- a/platform/msm8994/include/platform/iomap.h
+++ b/platform/msm8994/include/platform/iomap.h
@@ -545,6 +545,7 @@
 #define COMMAND_MODE_MDP_STREAM1_TOTAL  0x064
 #define ERR_INT_MASK0               0x10C
 
+#define LANE_CTL                    0x0AC
 #define LANE_SWAP_CTL               0x0B0
 #define TIMING_CTL                  0x0C4