runtime(dts): include ftplugin support (#14522)

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>

Author: Freed-Wu

runtime/ftplugin/dts.vim

@@ -0,0 +1,16 @@
+" Vim filetype plugin file
+" Language:             dts/dtsi (device tree files)
+" Maintainer:           Wu, Zhenyu <wuzhenyu@ustc.edu>
+" Latest Revision:      2024 Apr 12
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = 'setl inc< cms< com<'
+
+setlocal include=^\\%(#include\\\|/include/\\)
+" same as C
+setlocal commentstring&
+setlocal comments=sO:*\ -,mO:*\ \ ,exO:*/,s1:/*,mb:*,ex:*/,:///,://