[PATCH] wic: bootimg-efi-isar: use static method for _copy_additional_files

[srinuvasan.a@siemens.com]

From: Srinuvasan A <srinuvasan.a@siemens.com>

Presently we uses classmethod decorator for _copy_additional_files
method, and actually this not needed becuase we are not accessing any
class variable or method in this function.

Change to static method for the below reason
- We are performing the generic functionality
- Moreover this should be initialized only once

Signed-off-by: Srinuvasan A <srinuvasan.a@siemens.com>
---
 meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py b/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
index 4bfb70a0..5fe9bcb0 100644
--- a/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
+++ b/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
@@ -40,8 +40,8 @@ class BootimgEFIPlugin(SourcePlugin):
 
     name = 'bootimg-efi-isar'
 
-    @classmethod
-    def _copy_additional_files(cls, hdddir, initrd, dtb):
+    @staticmethod
+    def _copy_additional_files(hdddir, initrd, dtb):
         bootimg_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
         if not bootimg_dir:
             raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting")
-- 
2.25.1