ethtool: fix PKG_CONFIG_DEPENDS

Add missing CONFIG_ prefix.

Signed-off-by: Matthias Schiffer <[email protected]>

package/network/utils/ethtool/Makefile

@@ -23,7 +23,7 @@ PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=1
 
-PKG_CONFIG_DEPENDS:=ETHTOOL_PRETTY_DUMP
+PKG_CONFIG_DEPENDS:=CONFIG_ETHTOOL_PRETTY_DUMP
 
 include $(INCLUDE_DIR)/package.mk