Add Read failure to common File error YAML

Add Read failure to common File error YAML and can be used by
any application getting any read failure doing File operation.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I4cd9f18a9bb7b0fa8c18145642009b3acdb43808
diff --git a/xyz/openbmc_project/Common/File.errors.yaml b/xyz/openbmc_project/Common/File.errors.yaml
index 7c26429..1e63dba 100644
--- a/xyz/openbmc_project/Common/File.errors.yaml
+++ b/xyz/openbmc_project/Common/File.errors.yaml
@@ -6,3 +6,6 @@
 
 - name: Write
   description: Failed to write a file
+
+- name: Read
+  description: Failed to read a file