can: ems_pci: remove PCI_SUBVENDOR_ID_ASIX definition

PCI_SUBVENDOR_ID_ASIX is defined as 0xa000, which is not the vendor id
assigned to ASIX by PCI-SIG. Remove it to avoid possible confusion and
conflict.

Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20230724083933.3173513-2-jiaqing.zhao@linux.intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>