Relocate oplus_display_panel.h to kernel_headers.oplus

Change-Id: Ib96688b00ced213cf5d3fc5116dbe8dc72992e07

kernel-headers/.clang-format

@@ -0,0 +1 @@
+../../../build/soong/scripts/system-clang-format

kernel-headers/Android.bp

@@ -0,0 +1,5 @@
+cc_library_headers {
+    name: "kernel_headers.oplus",
+    export_include_dirs: ["include"],
+    vendor: true,
+}

kernel-headers/include/oplus/oplus_display_panel.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/ioctl.h>
+
+#define OPLUS_PANEL_IOCTL_BASE 'o'
+
+#define PANEL_IOCTL_SET_DIMLAYER_HBM _IOW(OPLUS_PANEL_IOCTL_BASE, 0x1F, unsigned int)
+#define PANEL_IOCTL_SET_FP_PRESS _IOW(OPLUS_PANEL_IOCTL_BASE, 0x29, unsigned int)