Add ro.bootimage.* property contexts

In addition, allow shell to read this property.

Test: getprop -Z
Test: cts-tradefed run cts -m CtsGestureTestCases
      and check /sdcard/device-info-files/PropertyDeviceInfo.deviceinfo.json

Bug: 169169031
Change-Id: Ib71b01bac326354696e159129f9dea4c2e918c51
diff --git a/private/compat/30.0/30.0.cil b/private/compat/30.0/30.0.cil
index 52e212d..d46cd15 100644
--- a/private/compat/30.0/30.0.cil
+++ b/private/compat/30.0/30.0.cil
@@ -1403,6 +1403,7 @@
 (typeattributeset exported_default_prop_30_0
   ( exported_default_prop
     aaudio_config_prop
+    build_bootimage_prop
     build_odm_prop
     build_vendor_prop
     surfaceflinger_prop