dmraid: add license information

[Peter; license is GPLv2+, drop LGPL, add LICENSE file]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/dmraid/dmraid.mk

@@ -12,6 +12,8 @@ DMRAID_SUBDIR = $(DMRAID_VERSION)/dmraid
 DMRAID_MAKE = $(MAKE1)
 DMRAID_INSTALL_STAGING = YES
 DMRAID_INSTALL_TARGET_OPT = DESTDIR=$(TARGET_DIR) install
+DMRAID_LICENSE = GPLv2
+DMRAID_LICENSE_FILES = $(DMRAID_SUBDIR)/LICENSE_GPL $(DMRAID_SUBDIR)/LICENSE
 
 DMRAID_DEPENDENCIES = lvm2