Blackfin: bf54x: constify pint register array

The array of pointers to register blocks never changes, so constify it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c
index 1177369..132e701 100644
--- a/arch/blackfin/mach-common/ints-priority.c
+++ b/arch/blackfin/mach-common/ints-priority.c
@@ -660,7 +660,7 @@
 	unsigned int latch;
 };
 
-static struct pin_int_t *pint[NR_PINT_SYS_IRQS] = {
+static struct pin_int_t * const pint[NR_PINT_SYS_IRQS] = {
 	(struct pin_int_t *)PINT0_MASK_SET,
 	(struct pin_int_t *)PINT1_MASK_SET,
 	(struct pin_int_t *)PINT2_MASK_SET,