Skip TextureNorm16Test on Nexus6P

Since either revert of the original patch or the new fix is failing
some bots, suppress it first.

https://chromium-review.googlesource.com/c/angle/angle/+/1917423
https://chromium-review.googlesource.com/c/angle/angle/+/1914127

TBR=geofflang@chromium.org

Bug: 1024387, angleproject:4089
Change-Id: I56fe0ba7e8a33f72b287528e920d6733e9cb5037
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1922602
Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Shrek Shao <shrekshao@google.com>

src/tests/gl_tests/TextureTest.cpp

@@ -4037,7 +4037,8 @@ class Texture2DNorm16TestES3 : public Texture2DTestES3
 TEST_P(Texture2DNorm16TestES3, TextureNorm16Test)
 {
     // TODO(crbug.com/angleproject/4089) Fails on Nexus5X Adreno
-    ANGLE_SKIP_TEST_IF(IsNexus5X());
+    // TODO(crbug.com/1024387) Fails on Nexus6P
+    ANGLE_SKIP_TEST_IF(IsNexus5X() || IsNexus6P());
     // TODO(crbug.com/angleproject/4089) Fails on Win Intel OpenGL driver
     ANGLE_SKIP_TEST_IF(IsIntel() && IsOpenGL());