add an editorconfig file

editorconfig is a standardised way to configure editors for a project.
Based off the Linux kernel .editorconfig file.

Signed-off-by: Rahul Sandhu <[email protected]>
Acked-by: Stephen Smalley <[email protected]>

Author: WavyEbuilder

.editorconfig

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+root = true
+
+[{*.{c,h,mk},Makefile,Makefile.*}]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = tab
+indent_size = 8
+
+[*.py]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4