nvme.h: add an enum for cns values

Ported over from nvme-cli.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index d31ff2d..fc3c242 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -282,6 +282,16 @@
 };
 
 enum {
+	NVME_ID_CNS_NS			= 0x00,
+	NVME_ID_CNS_CTRL		= 0x01,
+	NVME_ID_CNS_NS_ACTIVE_LIST	= 0x02,
+	NVME_ID_CNS_NS_PRESENT_LIST	= 0x10,
+	NVME_ID_CNS_NS_PRESENT		= 0x11,
+	NVME_ID_CNS_CTRL_NS_LIST	= 0x12,
+	NVME_ID_CNS_CTRL_LIST		= 0x13,
+};
+
+enum {
 	NVME_NS_FEAT_THIN	= 1 << 0,
 	NVME_NS_FLBAS_LBA_MASK	= 0xf,
 	NVME_NS_FLBAS_META_EXT	= 0x10,