[ARM] pxa: register Power I2C device only when necessary

Signed-off-by: Eric Miao <eric.miao@marvell.com>

arch/arm/mach-pxa/pxa27x.c

@@ -324,7 +324,7 @@ void __init pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info)
 	local_irq_disable();
 	PCFR |= PCFR_PI2CEN;
 	local_irq_enable();
-	pxa27x_device_i2c_power.dev.platform_data = info;
+	pxa_register_device(&pxa27x_device_i2c_power, info);
 }
 
 static struct platform_device *devices[] __initdata = {
@@ -334,7 +334,6 @@ static struct platform_device *devices[] __initdata = {
 	&pxa_device_stuart,
 	&pxa_device_i2s,
 	&pxa_device_rtc,
-	&pxa27x_device_i2c_power,
 	&pxa27x_device_ssp1,
 	&pxa27x_device_ssp2,
 	&pxa27x_device_ssp3,

arch/arm/mach-pxa/pxa3xx.c

@@ -29,6 +29,7 @@
 #include <mach/pm.h>
 #include <mach/dma.h>
 #include <mach/ssp.h>
+#include <mach/i2c.h>
 
 #include "generic.h"
 #include "devices.h"
@@ -531,7 +532,7 @@ void __init pxa3xx_init_irq(void)
 
 void __init pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info)
 {
-	pxa3xx_device_i2c_power.dev.platform_data = info;
+	pxa_register_device(&pxa3xx_device_i2c_power, info);
 }
 
 static struct platform_device *devices[] __initdata = {
@@ -547,7 +548,6 @@ static struct platform_device *devices[] __initdata = {
 	&pxa3xx_device_ssp4,
 	&pxa27x_device_pwm0,
 	&pxa27x_device_pwm1,
-	&pxa3xx_device_i2c_power,
 };
 
 static struct sys_device pxa3xx_sysdev[] = {