toolchain-external: fix uClibc-ng 64bit dynamic loader link

Commit 34f95bf9dbb0 (toolchain-external: fix support of uClibc-ng toolchains,
2015-07-13) added the missing ld-uClibc.so.1 dynamic linker symlink that
binaries expect when linked with uClibc-ng. However on 64bit targets the
linker is called ld64-uClibc.so.1. Handle that case as well.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

toolchain/toolchain-external/toolchain-external.mk

@@ -730,6 +730,9 @@ define TOOLCHAIN_EXTERNAL_FIXUP_UCLIBCNG_LDSO
 	if test -e $(TARGET_DIR)/lib/ld-uClibc.so.1; then \
 		ln -sf ld-uClibc.so.1 $(TARGET_DIR)/lib/ld-uClibc.so.0 ; \
 	fi
+	if test -e $(TARGET_DIR)/lib/ld64-uClibc.so.1; then \
+		ln -sf ld64-uClibc.so.1 $(TARGET_DIR)/lib/ld64-uClibc.so.0 ; \
+	fi
 endef
 
 define TOOLCHAIN_EXTERNAL_INSTALL_STAGING_CMDS