ARM: OMAP2: Switch to use DEVICE_ATTR_RO()

Move device attributes to DEVICE_ATTR_RO() as that would make things
a lot more "obvious" what is happening over the existing __ATTR usage.

Link: https://lore.kernel.org/r/[email protected]
Cc: Tony Lindgren <[email protected]>
Cc: [email protected]
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Tony Lindgren <[email protected]>
Signed-off-by: Sudeep Holla <[email protected]>

Author: sudeep-holla

arch/arm/mach-omap2/id.c

@@ -775,15 +775,13 @@ static const char * __init omap_get_family(void)
 		return kasprintf(GFP_KERNEL, "Unknown");
 }
 
-static ssize_t omap_get_type(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
+static ssize_t
+type_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	return sprintf(buf, "%s\n", omap_types[omap_type()]);
 }
 
-static struct device_attribute omap_soc_attr =
-	__ATTR(type,  S_IRUGO, omap_get_type,  NULL);
+static DEVICE_ATTR_RO(type);
 
 void __init omap_soc_device_init(void)
 {
@@ -806,6 +804,6 @@ void __init omap_soc_device_init(void)
 	}
 
 	parent = soc_device_to_device(soc_dev);
-	device_create_file(parent, &omap_soc_attr);
+	device_create_file(parent, &dev_attr_type);
 }
 #endif /* CONFIG_SOC_BUS */