NVMe: do PCI enumerate before nvme scan

Make sure that the PCI busses are enumerated before trying to
find a NVMe device.

Signed-off-by: Patrick Wildt <patrick@blueri.se>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h
index 3570a32..fc0935f 100644
--- a/include/config_distro_bootcmd.h
+++ b/include/config_distro_bootcmd.h
@@ -189,6 +189,7 @@
 		"fi\0" \
 	\
 	"nvme_boot=" \
+		BOOTENV_RUN_PCI_ENUM \
 		BOOTENV_RUN_NVME_INIT \
 		BOOTENV_SHARED_BLKDEV_BODY(nvme)
 #define BOOTENV_DEV_NVME	BOOTENV_DEV_BLKDEV