libthread_db: do not install to /lib, use

package/libthread_db/Makefile

@@ -31,11 +31,11 @@ BUILD_STYLE:=		manual
 INSTALL_STYLE:=		manual
 
 do-install:
-	${INSTALL_DIR} ${IDIR_LIBTHREAD_DB}/lib
 ifeq ($(ADK_TARGET_USE_STATIC_LIBS),)
 ifeq ($(ADK_TARGET_LIB_MUSL),)
 ifeq (${ADK_TARGET_UCLINUX},)
-	${CP} ${STAGING_TARGET_DIR}/lib/libthread_db*.so* ${IDIR_LIBTHREAD_DB}/lib
+	${INSTALL_DIR} ${IDIR_LIBTHREAD_DB}/$(ADK_TARGET_LIBC_PATH)
+	${CP} ${STAGING_TARGET_DIR}/lib/libthread_db*.so* ${IDIR_LIBTHREAD_DB}/$(ADK_TARGET_LIBC_PATH)
 endif
 endif
 endif