kbuild: trivial - use tabs for code indent where possible

Imported from upstream linux kernel kconfig.

Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

Change-Id: Ieed948c6b9c5fc40c1f3d652df11fa70ec6e93a0
Original-Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Original-Signed-off-by: Michal Marek <mmarek@suse.cz>
Reviewed-on: http://review.coreboot.org/9308
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

util/kconfig/lxdialog/inputbox.c

@@ -42,7 +42,7 @@ static void print_buttons(WINDOW * dialog, int height, int width, int selected)
  * Display a dialog box for inputing a string
  */
 int dialog_inputbox(const char *title, const char *prompt, int height, int width,
-                    const char *init)
+		    const char *init)
 {
 	int i, x, y, box_y, box_x, box_width;
 	int input_x = 0, key = 0, button = -1;