ARM: appropriate __init annotation for const data

Init data marked const should be annotated with __initconst for
correctness and not __initdata.  In some cases the array gathering
references to that data has to be marked const as well. This fixes
LTO builds that otherwise fail with section mismatch errors.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-sti/board-dt.c

@@ -14,7 +14,7 @@
 
 #include "smp.h"
 
-static const char *stih41x_dt_match[] __initdata = {
+static const char *const stih41x_dt_match[] __initconst = {
 	"st,stih415",
 	"st,stih416",
 	"st,stih407",