arm: fix i2c-pxa build

From commit 7d054817b780e664bed6701b2aa637718e1905b7:
> According to the PXA27x developer's manual, we shall do so.

We shall also at least compile test our changes.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/i2c/busses/i2c-pxa.c

@@ -548,7 +548,7 @@ static inline void i2c_pxa_stop_message(struct pxa_i2c *i2c)
 	 */
 	icr = readl(_ICR(i2c));
 	icr &= ~(ICR_STOP | ICR_ACKNAK);
-	writel(icr, _IRC(i2c));
+	writel(icr, _ICR(i2c));
 }
 
 /*