Update data option for components using Mixin data

- Removed all the data options from all the mixins.
- Updated component data property relying on data property defined in
  mixin.
- Export data property from mixin file itself.

Signed-off-by: Suren Neware <sneware9@in.ibm.com>
Change-Id: I4aeffcb333bbaf5b78bcadd711b3169b0b4cb10e
diff --git a/src/views/Configuration/Firmware/Firmware.vue b/src/views/Configuration/Firmware/Firmware.vue
index d78b43f..d4aef19 100644
--- a/src/views/Configuration/Firmware/Firmware.vue
+++ b/src/views/Configuration/Firmware/Firmware.vue
@@ -200,7 +200,7 @@
 import FormFile from '@/components/Global/FormFile';
 
 import VuelidateMixin from '@/components/Mixins/VuelidateMixin.js';
-import LoadingBarMixin from '@/components/Mixins/LoadingBarMixin';
+import LoadingBarMixin, { loading } from '@/components/Mixins/LoadingBarMixin';
 import BVToastMixin from '@/components/Mixins/BVToastMixin';
 
 export default {
@@ -228,6 +228,7 @@
       tftpFileName: null,
       timeoutId: null,
       isPageDisabled: null,
+      loading: loading,
     };
   },
   computed: {