Introduce dump_chip_info module

Introduce dump_chip_info dumper to dump driver information of chip-info
and required sepolicy.

[ 9819.206787][  T335] type=1400 audit(1729750876.372:4710): avc:
denied  { execute_no_trans } for  comm="android.hardwar"
path="/vendor/bin/dump/dump_chip_info" dev="dm-11" ino=79
scontext=u:r:hal_dumpstate_default:s0 tcontext=u:object_r:vendor_file:s0
tclass=file permissive=1
[ 9819.231374][  T335] type=1400 audit(1729750876.384:4711): avc:
denied  { getattr } for  comm="dump_chip_info" path="pipe:[1038881]"
dev="pipefs" ino=1038881 scontext=u:r:hal_dumpstate_default:s0
tcontext=u:r:shell:s0 tclass=fifo_file permissive=1

Flag: EXEMPT, change source of chipid
Bug: 298883728
Change-Id: I0ff6edf98548de4b93c9eeee005ab2e7b365cf7f

dump_chip_info/Android.bp

@@ -0,0 +1,20 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+cc_binary {
+    name: "dump_chip_info",
+    srcs: ["dump_chip_info.cpp"],
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
+    shared_libs: [
+        "libbase",
+        "libdump",
+        "liblog",
+    ],
+    vendor: true,
+    relative_install_path: "dump",
+}

dump_chip_info/chip_info.mk

@@ -0,0 +1,3 @@
+BOARD_VENDOR_SEPOLICY_DIRS += device/google/gs-common/dump_chip_info/sepolicy
+
+PRODUCT_PACKAGES += dump_chip_info

dump_chip_info/dump_chip_info.cpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2024 The Android Open Source 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.
+ */
+#include <dump/pixel_dump.h>
+#include <android-base/file.h>
+
+int main() {
+    dumpFileContent("ap_rom_patch_ver", "/sys/devices/system/goog-chip-info/ap_rom_patch_ver");
+    dumpFileContent("gpcm_asic_id", "/sys/devices/system/goog-chip-info/gpcm_asic_id");
+
+    return 0;
+}

dump_chip_info/sepolicy/dump_chip_info.te

@@ -0,0 +1,3 @@
+#
+pixel_bugreport(dump_chip_info)
+allow dump_chip_info sysfs_chip_info:file r_file_perms;

dump_chip_info/sepolicy/file.te

@@ -0,0 +1,2 @@
+#
+type sysfs_chip_info, sysfs_type, fs_type;

dump_chip_info/sepolicy/file_contexts

@@ -0,0 +1 @@
+/vendor/bin/dump/dump_chip_info     u:object_r:dump_chip_info_exec:s0

dump_chip_info/sepolicy/genfs_contexts

@@ -0,0 +1,2 @@
+genfscon sysfs /devices/system/goog-chip-info/ap_rom_patch_ver u:object_r:sysfs_chip_info:s0
+genfscon sysfs /devices/system/goog-chip-info/gpcm_asic_id     u:object_r:sysfs_chip_info:s0