x86: replace outb_p() with udelay(2) in drivers/input/mouse/pc110pad.c

replace outb_p() with udelay(2). This is a real ISA device so it likely
needs this particular delay.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

drivers/input/mouse/pc110pad.c

@@ -39,6 +39,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/pci.h>
+#include <linux/delay.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -62,8 +63,10 @@ static irqreturn_t pc110pad_interrupt(int irq, void *ptr)
 	int value     = inb_p(pc110pad_io);
 	int handshake = inb_p(pc110pad_io + 2);
 
-	outb_p(handshake |  1, pc110pad_io + 2);
-	outb_p(handshake & ~1, pc110pad_io + 2);
+	outb(handshake |  1, pc110pad_io + 2);
+	udelay(2);
+	outb(handshake & ~1, pc110pad_io + 2);
+	udelay(2);
 	inb_p(0x64);
 
 	pc110pad_data[pc110pad_count++] = value;