platform/x86: mlx-platform: Add UID LED for the next generation systems

Add support for UID LED for the next generation systems MQMB7xx,
MSN37xx, MSN34xx, MSN38xx.

All these systems support UID LED control through the programmable
device.
The UID LED is to be exposed to leds-mlxreg driver.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>

drivers/platform/x86/mlx-platform.c

@@ -913,6 +913,11 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_led_data[] = {
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_DRW_CAP_OFFSET,
 		.bit = BIT(5),
 	},
+	{
+		.label = "uid:blue",
+		.reg = MLXPLAT_CPLD_LPC_REG_LED5_OFFSET,
+		.mask = MLXPLAT_CPLD_LED_LO_NIBBLE_MASK,
+	},
 };
 
 static struct mlxreg_core_platform_data mlxplat_default_ng_led_data = {