kernel: x86: enable NVME support for 64 bit target

Newer motherboards support NVMe U.2 connectors but also NVMe storage can
be used on add-on pcie adapters.
Enable kernel driver on x86 for now so the NVMe flash storage can be used

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>

target/linux/x86/64/config-4.14

@@ -64,6 +64,7 @@ CONFIG_BACKLIGHT_GENERIC=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
 CONFIG_BALLOON_COMPACTION=y
 CONFIG_BLK_DEV_INTEGRITY=y
+CONFIG_BLK_DEV_NVME=y
 CONFIG_BLK_MQ_VIRTIO=y
 # CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
 CONFIG_CALGARY_IOMMU=y

target/linux/x86/64/config-4.19

@@ -70,6 +70,8 @@ CONFIG_BACKLIGHT_GENERIC=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
 CONFIG_BALLOON_COMPACTION=y
 CONFIG_BLK_DEV_INTEGRITY=y
+CONFIG_BLK_DEV_NVME=y
+CONFIG_NVME_MULTIPATH=y
 CONFIG_BLK_MQ_VIRTIO=y
 # CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
 CONFIG_BTT=y