Put simple update behind an option

4e338b2313f9f2a91aa1fb36693e36a328d58933 Removed tftp update support
from the codebase, but left SimpleUpdate in a non functional state.

Given that a number of forks have implemented the HTTPS/SCP versions of
simple update, we don't want to fully delete the code at this time, so
for the moment put it behind an option flag.

Tested: WIP

Change-Id: Ibab1e3a48ff640787eabf8ed5f7a5c08e3381307
Signed-off-by: Ed Tanous <etanous@nvidia.com>
diff --git a/meson.options b/meson.options
index 915f427..d1a9dda 100644
--- a/meson.options
+++ b/meson.options
@@ -340,6 +340,17 @@
                 ''',
 )
 
+# BMCWEB_REDFISH_ALLOW_SIMPLE_UPDATE
+option(
+    'redfish-allow-simple-update',
+    type: 'feature',
+    value: 'disabled',
+    description: '''Enables Redfish UpdateService SimpleUpdate Action.  Note
+                    that at this time this option is non-functional.  Redfish
+                    recommends using MultiPartUpdate.''',
+)
+
+
 # BMCWEB_HTTPS_PORT
 option(
     'https_port',