classes/module: allow substitution of the modules_install target name
Quite a few external kernel modules I've found floating around don't
have a modules_install target, but they do have an install target that
basically differs only in name. To make it easier to build these just
make this a MODULES_INSTALL_TARGET variable that you can set from the
recipe - the alternative would be copy-and-paste the do_install
definition from this class which is potentially fragile.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
