toolchain: Allow ld64.so linker

The glibc dynamic linkers for ppc64 and s390x are named ld64.so.*
so modify the check_glibc test to match them.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

toolchain/helpers.mk

@@ -204,7 +204,7 @@ check_glibc_rpc_feature = \
 #
 check_glibc = \
 	SYSROOT_DIR="$(strip $1)"; \
-	if test `find $${SYSROOT_DIR}/ -maxdepth 2 -name 'ld-linux*.so.*' -o -name 'ld.so.*' | wc -l` -eq 0 ; then \
+	if test `find $${SYSROOT_DIR}/ -maxdepth 2 -name 'ld-linux*.so.*' -o -name 'ld.so.*' -o -name 'ld64.so.*' | wc -l` -eq 0 ; then \
 		echo "Incorrect selection of the C library"; \
 		exit -1; \
 	fi; \