types: add NVME_VAL() definition

This is to get the field mask value shifted.

Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com>

src/nvme/types.h

@@ -45,6 +45,14 @@
 #define NVME_SET(value, name) \
 	(((__u32)(value) & NVME_##name##_MASK) << NVME_##name##_SHIFT)
 
+/**
+ * NVME_VAL() - get mask value shifted
+ * @name: The name of the sub-field within an nvme value
+ *
+ * Returns: The mask value shifted
+ */
+#define NVME_VAL(name) (NVME_##name##_MASK << NVME_##name##_SHIFT)
+
 /**
  * enum nvme_constants - A place to stash various constant nvme values
  * @NVME_NSID_ALL:		A broadcast value that is used to specify all