ath79: add support for TP-Link RE450 v2

TP-Link RE450 v2 is a dual band router/range-extender
based on Qualcomm/Atheros QCA9563 + QCA9880.

Specification:

- 775 MHz CPU
- 64 MB of RAM (DDR2)
- 8 MB of FLASH (SPI NOR)
- 3T3R 2.4 GHz
- 3T3R 5 GHz
- 1x 10/100/1000 Mbps Ethernet (AR8033 PHY)
- 7x LED, 4x button
- UART header on PCB (needs unmounted R64 & R69 0201 resistors/jumpers)

Flash instruction:
Apply factory image in OEM firmware web-gui.

U-Boot does not seem to have any recovery functions, so
debricking requires connection via UART.

Signed-off-by: Peter Lundkvist <peter.lundkvist@gmail.com>

tools/firmware-utils/src/tplink-safeloader.c

@@ -1079,6 +1079,46 @@ static struct device_info boards[] = {
 		.last_sysupgrade_partition = "file-system"
 	},
 
+	/** Firmware layout for the RE450 v2 */
+	{
+		.id = "RE450-V2",
+		.vendor = "",
+		.support_list =
+			"SupportList:\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:00000000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:55530000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:45550000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:4A500000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:43410000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:41550000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:41530000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:4B520000}\r\n"
+			"{product_name:RE450,product_ver:2.0.0,special_id:42520000}\r\n",
+		.support_trail = '\x00',
+		.soft_ver = NULL,
+
+		/* We're using a dynamic kernel/rootfs split here */
+		.partitions = {
+			{"fs-uboot", 0x00000, 0x20000},
+			{"firmware", 0x20000, 0x5e0000},
+			{"partition-table", 0x600000, 0x02000},
+			{"default-mac", 0x610000, 0x00020},
+			{"pin", 0x610100, 0x00020},
+			{"product-info", 0x611100, 0x01000},
+			{"soft-version", 0x620000, 0x01000},
+			{"support-list", 0x621000, 0x01000},
+			{"profile", 0x622000, 0x08000},
+			{"user-config", 0x630000, 0x10000},
+			{"default-config", 0x640000, 0x10000},
+			{"radio", 0x7f0000, 0x10000},
+
+			{NULL, 0, 0}
+		},
+
+		.first_sysupgrade_partition = "os-image",
+		.last_sysupgrade_partition = "file-system"
+	},
+
 	{}
 };