package/infozip: Rename HOST_CC to HOSTCC

Wrong variable name is used which can lead to build errors for the host variant:

[...] -I. -DUNIX" AS=" -c" -f unix/Makefile generic

c _match.s
make[1]: c: command not found

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/infozip/infozip.mk

@@ -29,7 +29,7 @@ endef
 define HOST_INFOZIP_BUILD_CMDS
 	$(MAKE) $(HOST_CONFIGURE_OPTS) -C $(@D) \
 		CFLAGS="$(HOST_CFLAGS) -I. -DUNIX" \
-		AS="$(HOST_CC) -c" \
+		AS="$(HOSTCC) -c" \
 		-f unix/Makefile generic
 endef