ACPI: BGRT: Constify 'struct bin_attribute'

The sysfs core now allows instances of 'struct bin_attribute' to be
moved into read-only memory.

Make use of that to protect them against accidental or malicious
modifications.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20241202-sysfs-const-bin_attr-acpi-v1-2-78f3b38d350d@weissschuh.net
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: t-8ch

drivers/acpi/bgrt.c

@@ -40,14 +40,14 @@ static struct attribute *bgrt_attributes[] = {
 	NULL,
 };
 
-static struct bin_attribute *bgrt_bin_attributes[] = {
+static const struct bin_attribute *const bgrt_bin_attributes[] = {
 	&bin_attr_image,
 	NULL,
 };
 
 static const struct attribute_group bgrt_attribute_group = {
 	.attrs = bgrt_attributes,
-	.bin_attrs = bgrt_bin_attributes,
+	.bin_attrs_new = bgrt_bin_attributes,
 };
 
 int __init acpi_parse_bgrt(struct acpi_table_header *table)