[PATCH] imx: fix get_boot_device() for imx8

[Tim Harvey]

commit 787f04bb6a0a ("imx: add USB2_BOOT type") broke get_boot_device()
for IMX8 which affects booting from SDP due to boot_instance being
non-zero.

Fix this by only using boot_instance for imx8ulp and imx9.

Fixes: 787f04bb6a0a ("imx: add USB2_BOOT type")
Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
 arch/arm/mach-imx/romapi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-imx/romapi.c b/arch/arm/mach-imx/romapi.c
index b49e7f80a286..ff0522c2d117 100644
--- a/arch/arm/mach-imx/romapi.c
+++ b/arch/arm/mach-imx/romapi.c
@@ -70,6 +70,8 @@ enum boot_device get_boot_device(void)
 		boot_dev = SPI_NOR_BOOT;
 		break;
 	case BT_DEV_TYPE_USB:
+		if (!is_imx8ulp() && !is_imx9())
+			boot_instance = 0;
 		boot_dev = boot_instance + USB_BOOT;
 		break;
 	default:
-- 
2.25.1