Add android/uapi kernel header.

Add the new android/uapi kernel header include directory.

Bug: 30072483
Change-Id: I3e1394b9abd744c7f76b0ac73bb07f614745a248
diff --git a/cc/arm64_device.go b/cc/arm64_device.go
index 8e7c57b..b951c1a 100644
--- a/cc/arm64_device.go
+++ b/cc/arm64_device.go
@@ -103,6 +103,7 @@
 		"-isystem ${LibcRoot}/arch-arm64/include",
 		"-isystem ${LibcRoot}/include",
 		"-isystem ${LibcRoot}/kernel/uapi",
+		"-isystem ${LibcRoot}/kernel/android/uapi",
 		"-isystem ${LibcRoot}/kernel/common",
 		"-isystem ${LibcRoot}/kernel/uapi/asm-arm64",
 	}, " "))