package/freescale-imx/firmware-imx: add support for i.MX8M Nano

This CPU requires the same (LP)DDR training binaries as i.MX8M Mini.

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Cc: Refik Tuzakli <tuzakli.refik@gmail.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/freescale-imx/firmware-imx/firmware-imx.mk

@@ -18,7 +18,7 @@ define FIRMWARE_IMX_EXTRACT_CMDS
 	$(call FREESCALE_IMX_EXTRACT_HELPER,$(FIRMWARE_IMX_DL_DIR)/$(FIRMWARE_IMX_SOURCE))
 endef
 
-ifeq ($(BR2_PACKAGE_FREESCALE_IMX_PLATFORM_IMX8M)$(BR2_PACKAGE_FREESCALE_IMX_PLATFORM_IMX8MM),y)
+ifeq ($(BR2_PACKAGE_FREESCALE_IMX_PLATFORM_IMX8M)$(BR2_PACKAGE_FREESCALE_IMX_PLATFORM_IMX8MM)$(BR2_PACKAGE_FREESCALE_IMX_PLATFORM_IMX8MN),y)
 FIRMWARE_IMX_INSTALL_IMAGES = YES
 FIRMWARE_IMX_DDRFW_DIR = $(@D)/firmware/ddr/synopsys
 define FIRMWARE_IMX_PREPARE_LPDDR4_FW