core/legal-info: properly check hashes of license files for host packages

When called for a host package, we currently miss the hash file, because
it is named after the target package.

Fix that by using the package raw-name.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/pkg-generic.mk

@@ -854,7 +854,7 @@ ifneq ($$(call qstrip,$$($(2)_SOURCE)),)
 ifeq ($$(call qstrip,$$($(2)_LICENSE_FILES)),)
 	@$$(call legal-warning-pkg,$$($(2)_RAW_BASE_NAME),cannot save license ($(2)_LICENSE_FILES not defined))
 else
-	@$$(foreach F,$$($(2)_LICENSE_FILES),$$(call legal-license-file,$$($(2)_NAME),$$($(2)_RAW_BASE_NAME),$$($(2)_PKGDIR),$$(F),$$($(2)_DIR)/$$(F),$$(call UPPERCASE,$(4)))$$(sep))
+	@$$(foreach F,$$($(2)_LICENSE_FILES),$$(call legal-license-file,$$($(2)_RAWNAME),$$($(2)_RAW_BASE_NAME),$$($(2)_PKGDIR),$$(F),$$($(2)_DIR)/$$(F),$$(call UPPERCASE,$(4)))$$(sep))
 endif # license files
 
 ifeq ($$($(2)_SITE_METHOD),local)