ramips: downgrade mt7621 "Spurious GIC Interrupt" to debug messages

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44028 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/ramips/patches-3.14/0012-MIPS-ralink-add-MT7621-support.patch

@@ -311,7 +311,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +	if (likely(irq < GIC_NUM_INTRS))
 +		do_IRQ(MIPS_GIC_IRQ_BASE + irq);
 +	else {
-+		pr_err("Spurious GIC Interrupt!\n");
++		pr_debug("Spurious GIC Interrupt!\n");
 +		spurious_interrupt();
 +	}
 +