tune-corei7.inc: Fix PACKAGE_EXTRA_ARCHS for corei7-32

tune-corei7.inc: Fix PACKAGE_EXTRA_ARCHS for corei7-32

Change the name to core2-32 from core2.

There's no AVAILTUNES with the name core2. Make sure that we specify
the correct TUNE name so PACKAGE_EXTRA_ARCHS is expanded correctly.

[ YOCTO #9197 ]

Signed-off-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>
Signed-off-by: Anuj Mittal <anujx.mittal@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>