rpi: add Compute Module 3+

Add Raspberry Pi Compute Module 3+ to list of models, the revision code
is 0x10 according to the list on raspberrypi.org.

v2: Use the same dtb name as CM3 as CM3+ is a drop in replacement
    for CM3.
Signed-off-by: NJonathan Gray <jsg@jsg.id.au>
Reviewed-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NMatthias Brugger <mbrugger@suse.com>

board/raspberrypi/rpi/rpi.c

@@ -143,6 +143,11 @@ static const struct rpi_model rpi_models_new_scheme[] = {
 		DTB_DIR "bcm2837-rpi-3-a-plus.dtb",
 		false,
 	},
+	[0x10] = {
+		"Compute Module 3+",
+		DTB_DIR "bcm2837-rpi-cm3.dtb",
+		false,
+	},
 };
 
 static const struct rpi_model rpi_models_old_scheme[] = {