Wildcat Point has two SPI controllers and added one is actually second one.
Fix the numbering by adding the description of the first one.

Fixes: caba248d ("spi: spi-pxa2xx-pci: Add ID and driver type for WildcatPoint PCH")
Cc: Leif Liddy <leif.liddy@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210208163816.22147-1-andriy.shevchenko@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>