platform: msm_shared: Add Ping Pong register offsets for MDP

Add Ping Pong registers bases required to configure FBC registers.

Change-Id: I76e4728e9cfa816ef50fb462d7566eefb0043d22
diff --git a/platform/apq8084/include/platform/iomap.h b/platform/apq8084/include/platform/iomap.h
index c8a7991..67a6f5b 100644
--- a/platform/apq8084/include/platform/iomap.h
+++ b/platform/apq8084/include/platform/iomap.h
@@ -259,6 +259,16 @@
 #define MDP_VP_0_MIXER_0_BASE       REG_MDP(0x3A00)
 #define MDP_VP_0_MIXER_1_BASE       REG_MDP(0x3E00)
 
+#ifdef MDP_PP_0_BASE
+#undef MDP_PP_0_BASE
+#endif
+#define MDP_PP_0_BASE               REG_MDP(0x12F00)
+
+#ifdef MDP_PP_1_BASE
+#undef MDP_PP_1_BASE
+#endif
+#define MDP_PP_1_BASE               REG_MDP(0x13000)
+
 #define DMA_CMD_OFFSET              0x048
 #define DMA_CMD_LENGTH              0x04C