mmc: sdhci: Add PCI IDs for Intel Braswell

The hardware is the same as used in Baytrail. Add these new PCI IDs to the
driver's list of supported IDs.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>