[ARM] pxa: fix mci_init functions returning -1

Fix all those PXA mci_init functions which return -1 rather than
propagating the error code to the higher levels.  Remove the silly
set_irq_type() calls as well - use the flags for request_irq()
instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index bb4b65d..5078ede 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -374,12 +374,10 @@
 	err = request_irq(SPITZ_IRQ_GPIO_nSD_DETECT, spitz_detect_int,
 			  IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 			  "MMC card detect", data);
-	if (err) {
+	if (err)
 		printk(KERN_ERR "spitz_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
-		return -1;
-	}
 
-	return 0;
+	return err;
 }
 
 static void spitz_mci_setpower(struct device *dev, unsigned int vdd)