initial Raspberry Vanilla AOSP 12 commit

* Audio
  - Based on AOSP hikey audio HAL:
    https://android.googlesource.com/device/linaro/hikey/+/refs/heads/master/audio/
  - ALSA based on Android-x86
  - ALSA loop is used to support HDMI audio on Pi 4 because VC4 HDMI
    audio devices use SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE that is not
    supported on Android
    https://github.com/raspberrypi/linux/issues/4651
    https://github.com/raspberrypi/linux/issues/4654

* Bluetooth
  - AOSP Broadcom vendor stack with some additional fixes from android-rpi

* Camera
  - libcamera for official Raspberry Pi CSI camera modules based on GloDroid
  - AOSP external camera HAL for UVC USB webcams:
    https://source.android.com/docs/core/camera/external-usb-cameras

* Graphics
  - OpenGL & Vulkan: upstream Mesa with GloDroid patches
  - Upstream drm_hwcomposer with force resolution patch from Android-x86 and
    my additional fixes
  - minigbm based on GloDroid

* Health
  - Based on AOSP cuttlefish health HAL

* Kernel
  - Merge of Raspberry Pi and AOSP common kernel with my additional fixes
    and configurations
    https://github.com/raspberrypi/linux
    https://android.googlesource.com/kernel/common/

* Lights
  - Based on LineageOS Xiaomi msm8996-common lights HAL

* suspend_blocker
  - Based on AOSP cuttlefish

* v4l2_codec2
  - Based on AOSP with my Raspberry Pi 4 specific fixes

* Wifi
  - AOSP Broadcom vendor stack with my additional fixes

seccomp_policy/codec2.vendor.ext.policy

@@ -0,0 +1,20 @@
+# device specific syscalls
+_llseek: 1
+epoll_create1: 1
+epoll_ctl: 1
+epoll_pwait: 1
+eventfd2: 1
+fstat64: 1
+fstatat64: 1
+fstatfs64: 1
+getcwd: 1
+getdents64: 1
+geteuid32: 1
+getuid32: 1
+mmap2: 1
+open: 1
+pselect6: 1
+sched_getaffinity: 1
+statfs64: 1
+sysinfo: 1
+ugetrlimit: 1

seccomp_policy/mediacodec.policy

@@ -0,0 +1,9 @@
+# device specific syscalls
+_llseek: 1
+eventfd2: 1
+getcwd: 1
+pselect6: 1
+recvfrom: 1
+sched_getaffinity: 1
+sendto: 1
+sysinfo: 1

seccomp_policy/mediaswcodec.policy

@@ -0,0 +1,3 @@
+# device specific syscalls
+sched_getaffinity: 1
+sysinfo: 1