editorconfig: update for perl scripts

We have two types of perl scripts in the tree. The ones from the
kernel are mostly tab based where as scripts we have written ourselves
use 4 space indentation.

Attempt to codify that in our .editorconfig

Reviewed-by: Pierrick Bouvier <[email protected]>
Signed-off-by: Alex Bennée <[email protected]>
Message-Id: <[email protected]>

Author: stsquad

.editorconfig

@@ -47,3 +47,16 @@ emacs_mode = glsl
 [*.json]
 indent_style = space
 emacs_mode = python
+
+# by default follow QEMU's style
+[*.pl]
+indent_style = space
+indent_size = 4
+emacs_mode = perl
+
+# but user kernel "style" for imported scripts
+[scripts/{kernel-doc,get_maintainer.pl,checkpatch.pl}]
+indent_style = tab
+indent_size = 8
+emacs_mode = perl
+