configure: Set the initial ldflags to match the cflags

Some gcc-based toolchain would fail to link if the abi set by the
cpuflags does not match the default.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

configure

@@ -3461,6 +3461,7 @@ fi
 if [ "$cpu" != generic ]; then
     add_cflags  $cpuflags
     add_asflags $cpuflags
+    test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
 fi
 
 # compiler sanity check