[ARM] pxa: remove IRQF_SAMPLE_RANDOM which is now a no-op

With the changes in the random tree, IRQF_SAMPLE_RANDOM is now a
no-op; interrupt randomness is now collected unconditionally in a very
low-overhead fashion; see commit 775f4b297b.  The IRQF_SAMPLE_RANDOM
flag was scheduled to be removed in 2009 on the
feature-removal-schedule, so this patch is preparation for the final
removal of this flag.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>

arch/arm/mach-pxa/magician.c

@@ -633,9 +633,8 @@ static struct platform_device bq24022 = {
 static int magician_mci_init(struct device *dev,
 				irq_handler_t detect_irq, void *data)
 {
-	return request_irq(IRQ_MAGICIAN_SD, detect_irq,
-				IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
-				"mmc card detect", data);
+	return request_irq(IRQ_MAGICIAN_SD, detect_irq, IRQF_DISABLED,
+			   "mmc card detect", data);
 }
 
 static void magician_mci_exit(struct device *dev, void *data)