Fix interaction between FADUMP and auto resize

If FADUMP is enabled, then the crashkernel area is reserved by the
firmware and it cannot be resized. Make sure that the Auto Resize
checkbox is always disabled if FADUMP is active.

src/include/kdump/uifunctions.rb

@@ -1344,7 +1344,12 @@ def update_usable_memory
     # Function initializes option
     # "KdumpMemory"
     def InitKdumpMemory(_key)
-      auto_resize = Kdump.KDUMP_SETTINGS["KDUMP_AUTO_RESIZE"] == "yes"
+      if Kdump.using_fadump?
+        UI.ChangeWidget(Id(:auto_resize), :Enabled, false)
+        auto_resize = false
+      else
+        auto_resize = Kdump.KDUMP_SETTINGS["KDUMP_AUTO_RESIZE"] == "yes"
+      end
       UI.ChangeWidget(Id(:auto_resize), :Value, auto_resize)
       if Kdump.total_memory > 0
         UI.ChangeWidget(Id(:allocated_memory_box), :Enabled, !auto_resize)
@@ -1454,6 +1459,14 @@ def HandleFADump(_key, event)
         UI.ChangeWidget(Id("use_fadump"), :Value, false)
       end
 
+      value = UI.QueryWidget(Id("use_fadump"), :Value)
+      if value
+        UI.ChangeWidget(Id(:auto_resize), :Value, false)
+        UI.ChangeWidget(Id(:allocated_memory_box), :Enabled, true)
+        update_usable_memory
+      end
+      UI.ChangeWidget(Id(:auto_resize), :Enabled, !value)
+
       nil
     end