turnip: Add a .editorconfig and .dir-locals.el

I was inheriting the one from src/freedreno with funny tabs, while
this driver is written with normal Mesa 3-space indents.
Unfortunately I have to add both files, because I use emacs and emacs
prefers .dir-locals to .editorconfig :(

Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>

src/freedreno/vulkan/.dir-locals.el

@@ -0,0 +1,8 @@
+((prog-mode
+  (indent-tabs-mode . nil)
+  (tab-width . 8)
+  (c-basic-offset . 3)
+  (c-file-style . "k&r")
+  (fill-column . 78)
+  )
+ )

src/freedreno/vulkan/.editorconfig

@@ -0,0 +1,5 @@
+[*.{c,h,cpp,hpp,cc,hh}]
+indent_style = space
+indent_size = 3
+tab_width = 8
+max_line_length = 78

src/freedreno/vulkan/tu_private.h

@@ -44,7 +44,6 @@
 #endif
 
 #include "c11/threads.h"
-#include "compiler/shader_enums.h"
 #include "main/macros.h"
 #include "util/list.h"
 #include "util/macros.h"