mmc: sdhci-pci: Workaround GLK firmware failing to restore the tuning value

mmc: sdhci-pci: Workaround GLK firmware failing to restore the tuning value

commit 5305ec6a27b2dc7398a689e661a4a2e951026f09 upstream.

GLK firmware can indicate that the tuning value will be restored after
runtime suspend, but not actually do that. Add a workaround that detects
such cases, and lets the driver do re-tuning instead.

Reported-by: Anisse Astier <anisse@astier.eu>
Tested-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>