trusty: storageproxy: add fs_ready_rw property context

Flag: EXEMPT bug fix
Bug: 350362101
Test: ABTD
Change-Id: I6876593d904ce7223b91f30d31edcd3e60fac82b
diff --git a/whitechapel/vendor/google/property_contexts b/whitechapel/vendor/google/property_contexts
index c9187a3..fe6d531 100644
--- a/whitechapel/vendor/google/property_contexts
+++ b/whitechapel/vendor/google/property_contexts
@@ -93,6 +93,7 @@
 
 # Trusty
 ro.vendor.trusty.storage.fs_ready               u:object_r:vendor_trusty_storage_prop:s0
+ro.vendor.trusty.storage.fs_ready_rw            u:object_r:vendor_trusty_storage_prop:s0
 
 # Mali GPU driver configuration and debug options
 vendor.mali.                                    u:object_r:vendor_arm_runtime_option_prop:s0 prefix