Add GIA (Google Input interface Abstraction layer) related SEPolicy rules and AIDL compatibility matrices.

AVC evidences:
10-29 16:53:50.756  1305  1305 I binder:1305_2: type=1400 audit(0.0:24): avc:  denied  { search } for  name="goog_touch_interface" dev="sysfs" ino=110634 scontext=u:r:gia:s0 tcontext=u:object_r:sysfs_touch_gti:s0 tclass=dir permissive=1
10-29 16:53:50.756  1305  1305 I binder:1305_2: type=1400 audit(0.0:25): avc:  denied  { read } for  name="interactive_calibrate" dev="sysfs" ino=110738 scontext=u:r:gia:s0 tcontext=u:object_r:sysfs_touch_gti:s0 tclass=file permissive=1
10-29 16:53:50.756  1305  1305 I binder:1305_2: type=1400 audit(0.0:26): avc:  denied  { open } for  path="/sys/devices/virtual/goog_touch_interface/gti.0/interactive_calibrate" dev="sysfs" ino=110738 scontext=u:r:gia:s0 tcontext=u:object_r:sysfs_touch_gti:s0 tclass=file permissive=1
10-29 16:53:50.756  1305  1305 I binder:1305_2: type=1400 audit(0.0:27): avc:  denied  { getattr } for  path="/sys/devices/virtual/goog_touch_interface/gti.0/interactive_calibrate" dev="sysfs" ino=110738 scontext=u:r:gia:s0 tcontext=u:object_r:sysfs_touch_gti:s0 tclass=file permissive=1
10-29 16:53:50.756  1305  1305 I binder:1305_2: type=1400 audit(0.0:28): avc:  denied  { write } for  name="interactive_calibrate" dev="sysfs" ino=110738 scontext=u:r:gia:s0 tcontext=u:object_r:sysfs_touch_gti:s0 tclass=file permissive=1

Test: Build succeed.
Test: Manually, checked whether GIA service is started successfully via command `service list`.
Bug: 367881686
Flag: build.RELEASE_PIXEL_GIA_ENABLED
Change-Id: I8069521425ff1e830d759252bf8bf460f4dc6f32
Signed-off-by: Kai Hsieh <kaihsieh@google.com>
diff --git a/input/gia/sepolicy/file_contexts b/input/gia/sepolicy/file_contexts
new file mode 100644
index 0000000..99d6857
--- /dev/null
+++ b/input/gia/sepolicy/file_contexts
@@ -0,0 +1,2 @@
+# chmod +x in SEPolicy language
+/vendor/bin/gia    u:object_r:gia_exec:s0