[ARM] pxa: initialise PXA devices before platform init code

Initialise PXA devices before platform initialisation, so that
platforms can parent devices to these.
Acked-by: Neric miao <ymiao3@marvell.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/pxa25x.c

@@ -313,4 +313,4 @@ static int __init pxa25x_init(void)
 	return ret;
 }
 
-subsys_initcall(pxa25x_init);
+postcore_initcall(pxa25x_init);

arch/arm/mach-pxa/pxa27x.c

@@ -396,4 +396,4 @@ static int __init pxa27x_init(void)
 	return ret;
 }
 
-subsys_initcall(pxa27x_init);
+postcore_initcall(pxa27x_init);

arch/arm/mach-pxa/pxa3xx.c

@@ -573,4 +573,4 @@ static int __init pxa3xx_init(void)
 	return ret;
 }
 
-subsys_initcall(pxa3xx_init);
+postcore_initcall(pxa3xx_init);