Use host ldconfig, if external toolchain is used

package/Makefile.in

@@ -121,7 +121,11 @@ TARGET_NM=$(TARGET_CROSS)nm
 TARGET_RANLIB=$(TARGET_CROSS)ranlib
 TARGET_OBJCOPY=$(TARGET_CROSS)objcopy
 TARGET_OBJDUMP=$(TARGET_CROSS)objdump
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL),y)
+TARGET_LDCONFIG=/sbin/ldconfig
+else
 TARGET_LDCONFIG=$(TARGET_CROSS)ldconfig
+endif
 ifeq ($(BR2_STRIP_strip),y)
 STRIP_DISCARD_ALL:=--discard-all
 STRIP_STRIP_UNNEEDED:=--strip-unneeded