sdhci: Add quirk for controllers that need IRQ re-init after reset

FSL eSDHC controllers losing signal/interrupt enable states after
reset, so we should re-enable them.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/host/sdhci.h

@@ -222,6 +222,8 @@ struct sdhci_host {
 #define SDHCI_QUIRK_NONSTANDARD_CLOCK			(1<<17)
 /* Controller does not like fast PIO transfers */
 #define SDHCI_QUIRK_PIO_NEEDS_DELAY			(1<<18)
+/* Controller losing signal/interrupt enable states after reset */
+#define SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET		(1<<19)
 
 	int			irq;		/* Device IRQ */
 	void __iomem *		ioaddr;		/* Mapped address */