ARM: OMAP: Move SleepX signal masking code to board-nokia770.c

On Nokia 770, the SleepX signal is masked with an MPUIO.  Unmasking
SleepX was previously done in mach-omap1/pm.c, but it belongs to the
board-specific file.
Signed-off-by: Juha Yrjola <juha.yrjola@nokia.com>

arch/arm/mach-omap1/board-nokia770.c

@@ -34,6 +34,15 @@
 
 static void __init omap_nokia770_init_irq(void)
 {
+	/* On Nokia 770, the SleepX signal is masked with an
+	 * MPUIO line by default.  It has to be unmasked for it
+	 * to become functional */
+
+	/* SleepX mask direction */
+	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
+	/* Unmask SleepX signal */
+	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
+
 	omap1_init_common_hw();
 	omap_init_irq();
 }

arch/arm/mach-omap1/pm.c

@@ -738,15 +738,6 @@ static int __init omap_pm_init(void)
 	else if (cpu_is_omap16xx())
 		setup_irq(INT_1610_WAKE_UP_REQ, &omap_wakeup_irq);
 
-#if 0
-	/* --- BEGIN BOARD-DEPENDENT CODE --- */
-	/* Sleepx mask direction */
-	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
-	/* Unmask sleepx signal */
-	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
-	/* --- END BOARD-DEPENDENT CODE --- */
-#endif
-
 	/* Program new power ramp-up time
 	 * (0 for most boards since we don't lower voltage when in deep sleep)
 	 */