Pass CC_LD_ARG to savedefconfig

Seen on build.configs that enable check_defconfig(), such as cuttlefish.

If we don't do this, CONFIG_LTO_CLANG will be turned off (because GCC
will be detected) which breaks defconfigs that enable this feature.

Change-Id: I19f31318058de9d1c020e5e30168c4a678289e27
Signed-off-by: Alistair Strachan <astrachan@google.com>
1 file changed