soc: amlogic: meson-gx-socinfo: use new soc_device_register functionality to populate machine name

A new fallback mechanism has been added to soc_device_register that
populates machine with the DT model information if machine isn't set yet.
This allows to remove this code here.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/ac3b4356-d4c3-25e4-9bc2-c5b369c676b2@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/soc/amlogic/meson-gx-socinfo.c

@@ -174,11 +174,6 @@ static int __init meson_gx_socinfo_init(void)
 		return -ENODEV;
 
 	soc_dev_attr->family = "Amlogic Meson";
-
-	np = of_find_node_by_path("/");
-	of_property_read_string(np, "model", &soc_dev_attr->machine);
-	of_node_put(np);
-
 	soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%x:%x - %x:%x",
 					   socinfo_to_major(socinfo),
 					   socinfo_to_minor(socinfo),