cargo: use HOST_CARGO_DL_DIR instead of CARGO_DL_DIR

The infrastructure only provides HOST_CARGO_DL_DIR, because this
package is host only. Ideally the infra should provide CARGO_DL_DIR,
but it doesn't currently, and that requires more significant changes.

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/cargo/cargo.mk

@@ -37,7 +37,7 @@ HOST_CARGO_HOME = $(HOST_DIR)/share/cargo
 define HOST_CARGO_EXTRACT_DEPS
 	@mkdir -p $(@D)/vendor
 	$(call suitable-extractor,$(CARGO_DEPS_SOURCE)) \
-		$(CARGO_DL_DIR)/$(CARGO_DEPS_SOURCE) | \
+		$(HOST_CARGO_DL_DIR)/$(CARGO_DEPS_SOURCE) | \
 		$(TAR) --strip-components=1 -C $(@D)/vendor $(TAR_OPTIONS) -
 endef
 
@@ -46,7 +46,7 @@ HOST_CARGO_POST_EXTRACT_HOOKS += HOST_CARGO_EXTRACT_DEPS
 define HOST_CARGO_EXTRACT_INSTALLER
 	@mkdir -p $(@D)/src/rust-installer
 	$(call suitable-extractor,$(CARGO_INSTALLER_SOURCE)) \
-		$(CARGO_DL_DIR)/$(CARGO_INSTALLER_SOURCE) | \
+		$(HOST_CARGO_DL_DIR)/$(CARGO_INSTALLER_SOURCE) | \
 		$(TAR) --strip-components=1 -C $(@D)/src/rust-installer $(TAR_OPTIONS) -
 endef