platform/x86/intel: pmt: Use y instead of objs in Makefile

The 'objs' is for user space tools, for the kernel modules
we should use 'y'.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210806155017.4633-1-andriy.shevchenko@linux.intel.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>