switch to kDisplayP3 enum

This has the same values as kDCIP3, just a more accurate name.

See skbug.com/9792

Test: make

Change-Id: Id775857f08247c49033e8c2fe0c3255dfc44cace
diff --git a/libs/hwui/renderthread/VulkanSurface.cpp b/libs/hwui/renderthread/VulkanSurface.cpp
index 9cbb754b..1da09b4 100644
--- a/libs/hwui/renderthread/VulkanSurface.cpp
+++ b/libs/hwui/renderthread/VulkanSurface.cpp
@@ -200,7 +200,7 @@
                             "Could not get gamut matrix from color space");
         if (memcmp(&surfaceGamut, &SkNamedGamut::kSRGB, sizeof(surfaceGamut)) == 0) {
             outWindowInfo->dataspace = HAL_DATASPACE_V0_SCRGB;
-        } else if (memcmp(&surfaceGamut, &SkNamedGamut::kDCIP3, sizeof(surfaceGamut)) == 0) {
+        } else if (memcmp(&surfaceGamut, &SkNamedGamut::kDisplayP3, sizeof(surfaceGamut)) == 0) {
             outWindowInfo->dataspace = HAL_DATASPACE_DISPLAY_P3;
         } else {
             LOG_ALWAYS_FATAL("Unreachable: unsupported wide color space.");