Merge branch 'for-4.15/upstream' into for-linus

- cp2112: GPIO error handling and Kconfig fixes from Sébastien Szymanski
- i2c-hid: fixup / quirk for Apollo-Lake based laptops, from Hans de Goede
- Input/Core: add eraser tool support, from Ping Cheng
- small assorted code fixes

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-core.c

@@ -1662,7 +1662,7 @@ static struct bin_attribute dev_bin_attr_report_desc = {
 	.size = HID_MAX_DESCRIPTOR_SIZE,
 };
 
-static struct device_attribute dev_attr_country = {
+static const struct device_attribute dev_attr_country = {
 	.attr = { .name = "country", .mode = 0444 },
 	.show = show_country,
 };