msm: display postprocessing:igc lut support

Inverse gammam correction display support for 8974
Use logical display id via PP ioctl

Change-Id: I9f1bec84a401f079690ecfd622a2e5f0f8307ff6
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index d03ecfa..800926b 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -276,6 +276,8 @@
 #define MDP_PP_OPS_READ 0x2
 #define MDP_PP_OPS_WRITE 0x4
 #define MDP_PP_OPS_DISABLE 0x8
+#define MDP_PP_IGC_FLAG_ROM0	0x10
+#define MDP_PP_IGC_FLAG_ROM1	0x20
 
 struct mdp_qseed_cfg {
 	uint32_t table_num;