ACPI: BGRT: Mark bin_attribute as __ro_after_init

The attribute is only modified during __init phase.

Protect it against accidental or intentional modifications afterwards.

Signed-off-by: Thomas Weißschuh <[email protected]>
Link: https://patch.msgid.link/20241202-sysfs-const-bin_attr-acpi-v1-1-78f3b38d350d@weissschuh.net
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: t-8ch

drivers/acpi/bgrt.c

@@ -29,7 +29,7 @@ BGRT_SHOW(type, image_type);
 BGRT_SHOW(xoffset, image_offset_x);
 BGRT_SHOW(yoffset, image_offset_y);
 
-static BIN_ATTR_SIMPLE_RO(image);
+static __ro_after_init BIN_ATTR_SIMPLE_RO(image);
 
 static struct attribute *bgrt_attributes[] = {
 	&bgrt_attr_version.attr,