- dmraid sources include libdevmapper.h,, which is provided by dm

  as pointed out by Pavel Roskin.

package/dmraid/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_DMRAID
 	bool "dmraid"
 	default n
+	select BR2_PACKAGE_DM
 	help
 	  Device-Mapper Software RAID support tool/